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Volume Calculator

Volume Calculator Popular Volume Calculator is a mathematics calculator that helps you calculate the volume of a three-dimensional shape or container. The formula used is: Cube: a³. Rectangular prism: l×w×h. Cylinder: πr²h. Cone: ⅓πr²h. Sphere: 4/3 πr³. P — free online calculator.

Area Calculator

Calculate the area of rectangles, squares, triangles, circles, trapezoids, parallelograms and ellipses.

Percentage Calculator

Calculate what percentage one number is of another.

Fraction & Rational Number Calculator

Fraction & Rational Number Calculator — free online calculator.

Find the right tool

717 calculators

Percentages & Ratios

10 calculators

Attendance Percentage Calculator

Attendance Percentage Calculator Work out your class attendance percentage and how it compares with a required minimum (commonly 75%). Enter the total classes held, the number you attended and the required percentage, and the calculator shows your current — free online calculator.

Average Percentage Calculator

Average Percentage Calculator The Average Percentage Calculator finds the mean of a list of percentages. Enter your percentages separated by commas — for example test scores, completion rates, or growth figures — and you get their straight average, the to — free online calculator.

Averages & Statistics

8 calculators

Basic Descriptive Statistics Calculator

Average Calculator Popular Find the mean, median, mode and range of a list of numbers at once. Enter your values separated by commas or spaces and the calculator returns the mean (arithmetic average), the median (middle value), the mode (most frequent val — free online calculator.

Geometry & Area

47 calculators

3 Sides Triangle Area Calculator

3 Sides Triangle Area Calculator This calculator finds the area of a triangle from the lengths of its three sides using Heron's formula. Enter sides a, b, and c, and it computes the semi-perimeter s = (a + b + c) / 2 and then the area A = √[s(s − a)(s − b — free online calculator.

Area Calculator

Area Calculator Popular The Area Calculator finds the area of common shapes — rectangle, square, triangle, circle, trapezoid, parallelogram, and ellipse — from their dimensions. The formulas used are: Rectangle: l×w. Square: s². Triangle: ½bh. Circle: πr² — free online calculator.

Area of a Hemisphere Calculator

Area of a Hemisphere Calculator Find the total surface area of a hemisphere from its radius. A solid hemisphere has a curved surface of 2πr² plus a flat circular base of πr², so the total surface area is 3πr². Enter the radius and you get both the curved — free online calculator.

Box Net Area Calculator

Box Net Area Calculator Work out the surface area of a rectangular box (cuboid) and how much wrapping paper and ribbon you need to gift-wrap it. Enter the length, width, and height to see the total surface area, paper with overlap, and ribbon length. — free online calculator.

Capsule Calculator

Capsule Calculator Calculate the volume and surface area of a capsule (a cylinder with a hemispherical cap on each end — the classic pill shape). Enter the radius and the cylinder height, and this calculator returns the volume, surface area, and total hei — free online calculator.

Cross Sectional Area Calculator

Cross Sectional Area Calculator Calculate the cross-sectional area of common shapes. Useful in engineering, physics, and material science for analyzing wire gauge, pipe dimensions, and structural properties. — free online calculator.

Cuboid Calculator

Cuboid Calculator Calculate volume, surface area, and diagonal of a cuboid. — free online calculator.

Cuboid Surface Area Calculator

Cuboid Surface Area Calculator Calculate the surface area of a cuboid (rectangular prism) from its length, width, and height. — free online calculator.

Donut (Annulus) Area Calculator

Donut (Annulus) Area Calculator The Donut Area Calculator finds the area of an annulus (a ring or donut shape) from its outer and inner radii, plus both circumferences. Enter the radii. — free online calculator.

Frustum Lateral Area Calculator

Frustum Lateral Area Calculator Calculate lateral surface area of a frustum (truncated cone). Enter top radius, bottom radius, and height to compute the curved (lateral) surface area, plus both circular base areas. — free online calculator.

Mobius Strip Calculator

Mobius Strip Calculator The Mobius Strip Calculator finds the surface area and single continuous edge length of a Möbius strip made from a rectangular strip of paper. Enter the strip length and width. — free online calculator.

Polygon Area Calculator (by Coordinates)

Polygon Area Calculator (by Coordinates) Polygon Area Calculator (by Coordinates) is a mathematics calculator that helps you calculate the area of a geometric shape from its dimensions. The formula used is: Area = |x1(y2−y3)+x2(y3−y1)+x3(y1−y2)|/2 (Shoela — free online calculator.

Quadrilateral Area Calculator

Quadrilateral Area Calculator Calculate the area of a quadrilateral using diagonals and angle between them. Area = (d1 × d2 × sin(θ)) / 2. — free online calculator.

Quadrilateral Area Calculator (from Coordinates)

Quadrilateral Area Calculator (from Coordinates) Find the area of any quadrilateral from the coordinates of its four corners using the shoelace formula. Enter the (x, y) points for vertices A, B, C and D in order around the shape, and the calculator retur — free online calculator.

Quarter Circle Area Calculator

Quarter Circle Area Calculator Calculate the area of a quarter circle (1/4 of a circle) using radius. Area = (π × r²) / 4. — free online calculator.

Rectangular Prism Calculator

Rectangular Prism Calculator Calculate volume and surface area of a rectangular prism. — free online calculator.

Rhombus Area Calculator

Rhombus Area Calculator Calculate the area of a rhombus using diagonals or base and height. — free online calculator.

Right Circular Cone Calculator

Right Circular Cone Calculator Calculate volume, surface area, and slant height of a right circular cone. — free online calculator.

Right Square Pyramid Calculator

Right Square Pyramid Calculator Calculate volume, surface area, and slant height of a right square pyramid. — free online calculator.

Right Trapezoid Area Calculator

Right Trapezoid Area Calculator Calculate the area of a right trapezoid with two parallel sides and height. — free online calculator.

SAS Triangle Area Calculator

SAS Triangle Area Calculator Find the area of a triangle from two sides and the angle between them (the side-angle-side, or SAS, case) using Area = ½ × a × b × sin(C). Enter the two side lengths and the included angle in degrees, and the calculator return — free online calculator.

Sphere Properties Calculator

Sphere Properties Calculator Calculate sphere properties from radius: volume and surface area. Volume = (4/3) × π × r³; Surface Area = 4π × r². — free online calculator.

Surface Area Calculator

Basic Shape Surface Areas Calculator: clearly defined inputs, output units, and assumptions.

Surface Area of a Sphere Calculator

Surface Area of a Sphere Calculator Calculate the surface area of a sphere from its radius using A = 4πr². A sphere is the set of all points at distance r from a centre, and its outer skin has area exactly four times that of a flat circle of the same radi — free online calculator.

Triangle Area Calculator (3 Sides)

Triangle Area Calculator (3 Sides) This triangle area calculator finds the area of any triangle when you know the lengths of its three sides (the SSS case). Enter sides a, b, and c and it applies Heron's formula: it first computes the semi-perimeter s = ( — free online calculator.

More Math Calculators

652 calculators

2D Distance Calculator

2D Distance Calculator This 2D distance calculator finds the straight-line distance between two points (x₁, y₁) and (x₂, y₂) on a plane. It uses the distance formula, which is just the Pythagorean theorem applied to the horizontal and vertical gaps betwee — free online calculator.

3D Box Diagonal Calculator

3D Box Diagonal Calculator This 3D box diagonal calculator finds the space diagonal of a rectangular box (cuboid) from its length, width, and height, along with the three face diagonals. The space diagonal is the longest straight line that fits inside the — free online calculator.

3D Distance Calculator

3D Distance Calculator This 3D distance calculator finds the straight-line distance between two points (x₁, y₁, z₁) and (x₂, y₂, z₂) in space. It extends the Pythagorean theorem to three dimensions: Distance = √[(x₂ − x₁)² + (y₂ − y₁)² + (z₂ − z₁)²]. Ente — free online calculator.

5 Number Summary Calculator

5 Number Summary Calculator The five-number summary describes a dataset with five points: the minimum, first quartile (Q1), median, third quartile (Q3) and maximum. Paste a list of numbers and this calculator sorts them, finds each value and also reports — free online calculator.

a + bi Form Calculator

a + bi Form Calculator This a + bi form calculator works with a complex number written in rectangular form, a + bi, where a is the real part and b is the imaginary part. Enter a and b and it returns the number's magnitude (modulus) √(a² + b²) and its phas — free online calculator.

AAS Triangle Calculator

AAS Triangle Calculator This AAS triangle calculator solves a triangle in the angle-angle-side case, where you know two angles and a side that is not between them. Enter Side A together with the two angles, and the calculator finds the third angle and the — free online calculator.

ABC Triangle Calculator

ABC Triangle Calculator This ABC triangle calculator works out the perimeter and area of a triangle from its three side lengths a, b, and c. The perimeter is simply a + b + c, and the area comes from Heron's formula, A = √[s(s − a)(s − b)(s − c)], where s — free online calculator.

Absolute & Relative Error Calculator

Absolute & Relative Error Calculator This absolute and relative error calculator compares a measured value with the true (actual) value to quantify how far off a measurement is. Enter your measured value M and the actual value A, and it returns the absolu — free online calculator.

Absolute Change Calculator

Absolute Change Calculator This absolute change calculator tells you how much a value has changed in raw units between a starting (initial) value and an ending (final) value. The absolute change is simply |final − initial|, so it is always reported as a p — free online calculator.

Absolute Value Calculator

Absolute Value Calculator This absolute value calculator returns |x|, the distance of a number from zero, which is always zero or positive. Enter a single number to get its magnitude and sign, and enter two numbers a and b to see the absolute value of the — free online calculator.

Absolute Value Equation Solver

Absolute Value Equation Solver This absolute value equation solver finds the values of x that satisfy |ax + b| = c. Enter the coefficient a, the constant b, and the right-hand side c, and it splits the equation into its two cases - ax + b = c and ax + b = — free online calculator.

Acute Triangle Calculator

Acute Triangle Calculator The Acute Triangle Calculator uses the law of cosines to find the angle opposite side A from the three side lengths, then tells you whether that angle is acute. An acute triangle has all three angles below 90°. Enter the three si — free online calculator.

Add and Subtract Polynomials Calculator

Add and Subtract Polynomials Calculator The Add and Subtract Polynomials Calculator combines two quadratic polynomials of the form ax² + bx + c by adding or subtracting like terms. Enter the coefficients of each polynomial, choose the operation, and it re — free online calculator.

Adding and Subtracting Fractions Calculator

Adding and Subtracting Fractions Calculator The Adding and Subtracting Fractions Calculator combines two fractions using either addition or subtraction and returns the answer in lowest terms plus its decimal value. Choose the operation, enter each numerat — free online calculator.

Adding Fractions Calculator

Adding Fractions Calculator The Adding Fractions Calculator adds two fractions and returns the sum as a fraction reduced to its lowest terms, along with the decimal value. Enter the numerator and denominator of each fraction and it finds a common denomina — free online calculator.

Addition Calculator

Addition Calculator The Addition Calculator adds two numbers together and shows the sum instantly. Enter any two values — whole numbers, decimals, or negatives — and it returns a + b along with the full equation. — free online calculator.

Adjoint (Adjugate) Matrix Calculator

Adjoint (Adjugate) Matrix Calculator The Adjoint Matrix Calculator finds the adjugate (classical adjoint) of a 2×2 matrix. For a matrix [[a, b], [c, d]], the adjugate is the transpose of the cofactor matrix, which equals [[d, −b], [−c, a]]. The calculator — free online calculator.

Age Calculator

Age Calculator — Completed Calendar Years — specific, verifiable calculation with defined inputs.

Angle Between Two Vectors Calculator

Angle Between Two Vectors Calculator The Angle Between Two Vectors Calculator finds the angle separating two 3D vectors using the dot product and their magnitudes. The formula used is: θ = cos⁻¹[(A·B) ÷ (|A||B|)]. Results are given in degrees and radians. — free online calculator.

Angle Converter

Angle Converter (Degrees to Radians) The Angle Converter changes an angle from degrees to radians. It multiplies the degree value by π/180, since a full 360° turn equals 2π radians. The formula used is: radians = degrees × (π ÷ 180). — free online calculator.

Angle Of Depression Calculator

Angle Of Depression Calculator The Angle of Depression Calculator finds how far below the horizontal you look down to an object, from the vertical drop and the horizontal distance. The formula used is: angle of depression = arctan(vertical drop ÷ horizont — free online calculator.

Angle Of Right Triangle Calculator

Angle Of Right Triangle Calculator The Angle of a Right Triangle Calculator finds the two acute angles and the hypotenuse of a right triangle from the lengths of its two legs. It uses the inverse tangent of the opposite over the adjacent leg, with the sec — free online calculator.

Annulus (Ring) Calculator

Annulus (Ring) Calculator The Annulus (Ring) Calculator finds the area, circumferences, and width of a ring — the region between two concentric circles. Enter the outer and inner radii and it returns all the key measurements of the ring. The formulas used — free online calculator.

Antilog Calculator

Antilog Calculator The Antilog Calculator reverses a logarithm: given a log value and its base, it finds the original number. Taking the antilog is the same as raising the base to the power of the log value. The formula used is: antilog = base^(log value) — free online calculator.

API Rate Limit & Capacity The API Rate Limit & Capacity Calculator

API Rate Limit & Capacity The API Rate Limit & Capacity Calculator estimates how many requests an API can serve and what they cost. Enter a requests-per-second limit (or a fixed monthly volume) and the cost per request to see daily, hourly, and monthly fi — free online calculator.

Apothem of Regular Polygon Calculator

Apothem of Regular Polygon Calculator The Apothem of Regular Polygon Calculator finds the apothem — the distance from the center to the midpoint of a side — of a regular polygon, then uses it to compute the perimeter and area. The formula used is: Apothem — free online calculator.

App Store Revenue Calculator

App Store Revenue Calculator The App Store Revenue Calculator estimates how much an app earns from downloads, paying-user conversion, and average spend, after the store's commission. Paying users = downloads × conversion%; gross = paying users × average r — free online calculator.

Arc Length Calculator

Arc Length Calculator The Arc Length Calculator finds the length of a circular arc from the circle's radius and the central angle. The formula used is: Arc length = r × θ (with θ in radians) = r × angle × π/180; Fraction of circle = angle/360. — free online calculator.

Arccos Calculator

Arccos Calculator (Inverse Cosine) The Arccos Calculator finds the inverse cosine of a value between -1 and 1, returning the angle in both radians and degrees. The formula used is: arccos(x) = the angle whose cosine is x. — free online calculator.

Arcsin Calculator

Arcsin Calculator (Inverse Sine) The Arcsin Calculator finds the inverse sine of a value between -1 and 1, returning the angle in radians and degrees. The formula used is: arcsin(x) = the angle whose sine is x, in the range [-90°, 90°]. — free online calculator.

Arctan Calculator

Arctan Calculator (Inverse Tangent) The Arctan Calculator finds the inverse tangent of any real number, returning the angle in radians and degrees. The formula used is: arctan(x) = the angle whose tangent is x, in the range (-90°, 90°). — free online calculator.

Arcus Tangent Calculator

Arcus Tangent Calculator (arctan) The Arcus Tangent Calculator (arctan, the Latin name for inverse tangent) finds the angle whose tangent equals a given value, in radians and degrees. The formula used is: arctan(x) = the angle whose tangent is x, in the r — free online calculator.

Area Calculator

Calculate the area of rectangles, squares, triangles, circles, trapezoids, parallelograms and ellipses.

Area of a Circle Calculator

Area of a Circle Calculator Find the area of a circle from its radius using A = π × r². The area is the flat space enclosed by the circle, measured in square units. Enter the radius and the calculator returns the area, scaling with the square of the radiu — free online calculator.

Area of a Trapezoid Calculator

Area of a Trapezoid Calculator Find the area of a trapezoid from its two parallel sides and the perpendicular height using A = ½ × (a + b) × h. A trapezoid has one pair of parallel sides (the bases a and b); the height is the straight-line distance betwee — free online calculator.

Area of an Oblique Triangle Calculator

Area of an Oblique Triangle Calculator The Area of an Oblique Triangle Calculator finds the area of any triangle that is not right-angled, using two sides and the angle between them. The formula used is: Area = ½ × a × b × sin(C), where a and b are two si — free online calculator.

Area of an Obtuse Triangle Calculator

Area of an Obtuse Triangle Calculator The Area of an Obtuse Triangle Calculator finds the area of a triangle that has one angle greater than 90°. Enter the base and the corresponding height, or use the side-angle-side form. The formula used is: Area = ½ × — free online calculator.

Area Unit Converter

Area Unit Converter The Area Unit Converter changes an area value between square meters, square centimeters, square feet, square inches, acres, and hectares. It converts to square meters first, then to the target unit. Factors: 1 ft² = 0.0929 m², 1 acre = — free online calculator.

Arithmetic Sequence Calculator

Arithmetic Sequence Calculator Work with an arithmetic sequence — a list of numbers that increases or decreases by a fixed common difference. Enter the first term, the common difference, and how many terms you want, and the calculator returns the nth term — free online calculator.

ASA Triangle Calculator

ASA Triangle Calculator Solve a triangle from the angle-side-angle (ASA) case: two angles and the side between them. Enter angle A, angle B, and the included side c, and the calculator finds the third angle, the remaining two sides (using the law of sines — free online calculator.

Associative Property Calculator

Associative Property Calculator See the associative property of addition in action: grouping numbers differently does not change the sum, so (a + b) + c always equals a + (b + c). Enter three numbers and the calculator evaluates both groupings and confirm — free online calculator.

Average Rate of Change Calculator

Average Rate of Change Calculator The Average Rate of Change Calculator finds how fast a function changes between two points. Enter the two x-values and their function values f(x), and you get the average rate of change — the slope of the straight line (s — free online calculator.

Babylonian Numbers Calculator

Babylonian Numbers Calculator Convert decimal numbers to and from the ancient Babylonian base-60 (sexagesimal) numeral system. — free online calculator.

Bandwidth & Download Speed Calculator

Bandwidth & Download Speed Calculator Estimate how long a file takes to download at a given internet speed, and how quickly a monthly data cap runs out. Enter the file size in GB, your connection speed in Mbps, and your monthly data allowance, and the cal — free online calculator.

Base of a Triangle Calculator

Base of a Triangle Calculator Find the base of a triangle when you know its area and height. Rearranging the standard area formula (Area = ½ × base × height) gives base = 2 × area ÷ height. Enter the area and the perpendicular height and the calculator re — free online calculator.

Batch Task Time Calculator

Batch Task Time Calculator Estimate how long a batch job takes to finish. Enter the total number of items, your processing rate, the per-batch setup time and the batch size, and the calculator works out the number of batches, total processing time, total — free online calculator.

Bayes' Theorem Calculator

Bayes' Theorem Calculator Apply Bayes' theorem to update a probability in light of new evidence. Enter the prior probability of an event, the chance of the evidence when the event is true, and the chance of the evidence when it's false. The calculator ret — free online calculator.

Bessel Function Calculator

Bessel Function Calculator Calculate the Bessel function of the first kind J₀(x) and J₁(x) using series expansion. — free online calculator.

Big Number Calculator

Big Number Calculator Add, subtract, multiply, divide, raise to a power, or take the modulo of very large whole numbers with exact precision. This calculator uses arbitrary-precision integer arithmetic (BigInt), so results never lose accuracy no matter ho — free online calculator.

Bilinear Interpolation Calculator

Bilinear Interpolation Calculator Perform bilinear interpolation to estimate a value at an arbitrary point (x,y) within a rectangular grid of known values. — free online calculator.

Binary Addition Calculator

Binary Addition Calculator Add two binary numbers and see the sum in binary, along with its decimal value. Enter each number using only 0s and 1s; the calculator adds them following base-2 carry rules and shows the binary sum plus the decimal equivalent s — free online calculator.

Binary Calculator

Binary Calculator Add, subtract, multiply, or divide two binary numbers and see the result in binary, decimal, and hexadecimal. Enter each value using only 0s and 1s, choose an operation, and the calculator converts to decimal, performs the operation, and — free online calculator.

Binary Division Calculator

Binary Division Calculator Divide one binary number by another and see the quotient and remainder in both binary and decimal. Enter the dividend and divisor as strings of 0s and 1s, and this calculator converts them to decimal, divides, then converts the — free online calculator.

Binary Fraction Calculator

Binary Fraction Calculator Convert a binary fraction such as 101.101 into its decimal value. Enter a binary number with an optional point, and this calculator adds the integer part to the fractional part, where each bit after the point is worth 1/2, 1/4, — free online calculator.

Binary Multiplication Calculator

Binary Multiplication Calculator Multiply two binary numbers and see the product in both binary and decimal. Enter each value as a string of 0s and 1s and this calculator converts them to decimal, multiplies, then converts the product back to base-2. — free online calculator.

Binary Operations Calculator

Binary Operations Calculator Perform bitwise AND, OR, and XOR on two binary numbers and see every result in both binary and decimal. Enter two strings of 0s and 1s and this calculator lines them up bit by bit and applies each logical operation. — free online calculator.

Binary Subtraction Calculator

Binary Subtraction Calculator Subtract one binary number from another and see the difference in both binary and decimal. Enter the two numbers as strings of 0s and 1s and this calculator converts them to decimal, subtracts, then converts the result back t — free online calculator.

Binomial Coefficient Calculator

Binomial Coefficient Calculator Compute the binomial coefficient 'n choose k' — the number of ways to pick k items from a set of n when order does not matter. Enter n and k and this calculator returns C(n, k) = n! / (k!·(n−k)!). — free online calculator.

Binomial Distribution Calculator

Binomial Distribution Calculator Find the probability of getting exactly k successes — and up to k, and more than k — in n independent trials, each with success probability p. This calculator also reports the mean, variance, and standard deviation of the — free online calculator.

Binomial Expansion Calculator

Evaluate the numerical value of (a + b)^n using inputs a, b, and n. The tool reports a number rather than listing expanded polynomial terms.

Birthday Paradox Calculator

Birthday Paradox Calculator Find the surprising probability that two people in a group share a birthday. Enter the number of people and this calculator returns the chance of at least one shared birthday, the chance of none, the group size needed to cross — free online calculator.

Bit Shift Calculator

Bit Shift Calculator Shift the bits of an integer left or right by a chosen number of positions and see the result in decimal and binary. A left shift multiplies by powers of two; a right shift divides (rounding toward zero). — free online calculator.

Bitwise AND Calculator

Bitwise AND Calculator The Bitwise AND Calculator computes the bitwise AND of two integers: each output bit is 1 only when the matching bit is 1 in both numbers. The formula used is: result = A & B. It also shows the result in binary. — free online calculator.

Bitwise Calculator

Bitwise Calculator Apply the bitwise AND, OR, and XOR operators to two integers. Enter two whole numbers and this calculator compares them bit by bit and returns each result in decimal. — free online calculator.

Box Method Multiplication Calculator

Box Method Multiplication Calculator Multiply two numbers using the box method (area model) showing the partial products visually. — free online calculator.

Cartesian to Polar Calculator

Cartesian to Polar Calculator Convert Cartesian coordinates (x, y) to polar coordinates (r, θ) and vice versa. — free online calculator.

Ceiling Function Calculator

Ceiling Function Calculator Calculate the ceiling function ⌈x⌉ — the smallest integer greater than or equal to x. — free online calculator.

Circle Properties Calculator

Circle Properties Calculator Calculate circle properties from radius: area and circumference. Area = π × r²; Circumference = 2π × r. — free online calculator.

Class Width Calculator

Class Width Calculator (Frequency Distribution) Class Width Calculator (Frequency Distribution) is a mathematics calculator that helps you calculate class width calculator (frequency distribution) values from your input data. The formula used is: Class Wi — free online calculator.

Clock Angle Calculator

Clock Angle Calculator Calculate the angle between the hour and minute hands of a clock at any given time. — free online calculator.

Cofactor Expansion Calculator

Cofactor Expansion Calculator (2×2) The Cofactor Expansion Calculator finds the determinant of a 2×2 matrix by expanding along the first row, showing the signed products. Enter the four matrix entries. — free online calculator.

Cofactor Matrix Calculator

Cofactor Matrix Calculator (2×2) The Cofactor Matrix Calculator finds the matrix of cofactors of a 2×2 matrix, the first step toward the adjugate and inverse. Enter the four matrix entries. — free online calculator.

Cofunction Calculator

Cofunction Calculator The Cofunction Calculator applies the cofunction identities, which relate a trig function of an angle to the complementary function of its complement (90° − θ). Enter an angle and function. — free online calculator.

Coin Rotation Paradox Calculator

Coin Rotation Paradox Calculator Calculate how many times a rolling coin rotates as it moves around another coin of any radius — solving the famous coin rotation paradox. — free online calculator.

Collatz Conjecture Calculator

Collatz Conjecture Calculator Explore the Collatz conjecture: apply n → n/2 (if even) or n → 3n+1 (if odd) and count steps to reach 1. — free online calculator.

Column Space Calculator

Column Space Calculator (2×2) The Column Space Calculator finds the rank and a basis for the column space of a 2×2 matrix. Enter the four matrix entries. — free online calculator.

Combination Calculator

Combination Calculator (nCr) Combination Calculator (nCr) is a mathematics calculator that helps you calculate combination calculator (ncr) values from your input data. The formula used is: nCr = n! / (r! × (n−r)!) · nPr = n! / (n−r)!. Ensure all inputs s — free online calculator.

Comparing Fractions Calculator

Comparing Fractions Calculator The Comparing Fractions Calculator tells you which of two fractions is larger using cross-multiplication, and shows their decimal values. Enter both numerators and denominators. — free online calculator.

Compass Bearing Calculator

Compass Bearing Calculator Find the initial compass bearing (forward azimuth) from one point to another given their latitude and longitude. The bearing is the angle clockwise from true north you'd follow along the great-circle path. Enter the start and en — free online calculator.

Complex Conjugate Calculator

Complex Conjugate Calculator The Complex Conjugate Calculator returns the conjugate of a complex number a + bi (which is a − bi), along with its modulus and the product z·z̄. Enter the real and imaginary parts. — free online calculator.

Condition Number Calculator

Condition Number Calculator (2×2) The Condition Number Calculator measures how sensitive a 2×2 linear system is to input errors, using the infinity-norm condition number. Enter the four matrix entries. — free online calculator.

Consecutive Integers Calculator

Consecutive Integers Calculator The Consecutive Integers Calculator finds a run of consecutive integers that add up to a target sum. Enter the target sum and how many consecutive integers to use. — free online calculator.

Convolution Calculator

Convolution Calculator The Convolution Calculator computes the discrete convolution of two number sequences, as used in signal processing and polynomial multiplication. Enter both sequences separated by commas. — free online calculator.

Coordinate Grid Calculator

Coordinate Grid Calculator The Coordinate Grid Calculator finds the distance, midpoint, and slope between two points on the coordinate plane. Enter the coordinates of both points. — free online calculator.

Corner Point Calculator

Corner Point Calculator The Corner Point Calculator finds where two lines intersect — a key step in linear programming for locating feasible-region corner points. Enter each line as a₁x + b₁y = c₁. — free online calculator.

Cos 1

Cos 1 — free online calculator.

Cosecant Calculator

Cosecant Calculator Calculate the cosecant (csc) of an angle. Cosecant is the reciprocal of sine: csc(θ) = 1/sin(θ). — free online calculator.

Cotangent Calculator

Cotangent Calculator Cotangent is a fast, free math calculator. Enter Angle (degrees) to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your brows — free online calculator.

Coterminal Angle Calculator

Coterminal Angle Calculator Coterminal Angle is a fast, free math calculator. Enter Angle (degrees) to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private — free online calculator.

Cramer's Rule Calculator

Cramer's Rule Calculator (2×2) The Cramer's Rule Calculator solves a 2×2 system of linear equations using determinants. Enter the coefficients and constants for a₁₁x + a₁₂y = b₁ and a₂₁x + a₂₂y = b₂. — free online calculator.

Cross Product Calculator

Cross Product Calculator Calculate the cross product of two 3D vectors. — free online calculator.

Cube Root Calculator

Cube Root Calculator Calculate the cube root of a number. The cube root of n is the value that, when multiplied by itself three times, equals n. Written as ∛n or n^(1/3). — free online calculator.

Cube Volume Calculator

Cube Volume Calculator Calculate the volume of a cube from its side length. A cube is a three-dimensional shape with six equal square faces. Volume = side³. — free online calculator.

Cubic Equation Solver

Cubic Equation Solver Solve cubic equations of the form ax³ + bx² + cx + d = 0. Finds all real and complex roots. — free online calculator.

Cuboid Volume Calculator

Cuboid Volume Calculator Calculate the volume of a cuboid (rectangular prism) from its length, width, and height. — free online calculator.

Cycloid

Cycloid — free online calculator.

Cylindrical Coordinates Calculator

Cylindrical Coordinates Calculator The Cylindrical Coordinates Calculator converts Cartesian coordinates (x, y, z) into cylindrical coordinates (r, θ, z). Enter the x, y, and z values. — free online calculator.

Decimal Degrees to DMS Calculator

Decimal Degrees to DMS Calculator The Decimal Degrees to DMS Calculator converts a decimal angle into degrees, minutes, and seconds. Enter the decimal degrees. — free online calculator.

Decimal from Fraction Calculator

Decimal from Fraction Calculator Convert a fraction (numerator/denominator) to decimal and simplified fraction form. — free online calculator.

Descartes' Rule of Signs Calculator

Descartes' Rule of Signs Calculator The Descartes' Rule of Signs Calculator counts the sign changes in a polynomial's coefficients to bound the number of positive and negative real roots. Enter the coefficients from highest degree to constant, comma-separ — free online calculator.

Diagonalize Matrix Calculator

Diagonalize Matrix Calculator (2×2) The Diagonalize Matrix Calculator finds the eigenvalues of a 2×2 matrix, the diagonal matrix D, and whether the matrix is diagonalizable. Enter the four entries. — free online calculator.

Diameter of a Cone Calculator

Diameter of a Cone Calculator The Diameter of a Cone Calculator finds the base diameter of a cone from its volume and height. Enter the volume and height. — free online calculator.

Diamond Problem Solver

Diamond Problem Solver The Diamond Problem Solver finds two numbers given their product and sum — the core of the factoring diamond method. Enter the product (top) and sum (bottom). — free online calculator.

Digital Root Calculator

Digital Root Calculator Digital Root is a fast, free math calculator. Enter Number to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser. — free online calculator.

Dimensions of a Rectangle Calculator

Dimensions of a Rectangle Calculator The Dimensions of a Rectangle Calculator finds the length and width of a rectangle from its area and perimeter by solving the resulting quadratic. Enter the area and perimeter. — free online calculator.

Direct Variation Calculator

Direct Variation Calculator The Direct Variation Calculator finds the constant of variation k from a known pair (x, y) using y = kx, then predicts y for a new x. Enter a known x and y and the new x. — free online calculator.

Directed Line Segment Ratio Calculator

Directed Line Segment Ratio Calculator Find division point on directed line segment. If P divides AB in ratio m:n, then P = (n×A + m×B) / (m+n). — free online calculator.

Discriminant Calculator

Discriminant Calculator Calculate the discriminant of a quadratic equation. — free online calculator.

Distributive Property Calculator

Distributive Property Calculator The Distributive Property Calculator expands a(b + c) into ab + ac and computes the result. Enter the three values. — free online calculator.

Dividing Exponents Calculator

Dividing Exponents Calculator The Dividing Exponents Calculator applies the quotient rule for powers of the same base: subtract the exponents. Enter the base and both exponents. — free online calculator.

Dividing Radicals Calculator

Dividing Radicals Calculator The Dividing Radicals Calculator divides one square-root expression by another using the quotient rule for radicals, and gives the simplified decimal result. Enter the coefficients and radicands. — free online calculator.

Divisors Calculator

Divisors Calculator The Divisors Calculator lists all positive divisors (factors) of a whole number, along with how many there are and their sum. Enter a positive integer. — free online calculator.

Effect Size Calculator

Effect Size Calculator (Cohen's d) Effect Size Calculator (Cohen's d) is a mathematics calculator that helps you calculate effect size calculator (cohen's d) values from your input data. The formula used is: d = (μ₁−μ₂) / s_pooled · s_pooled = √[((n₁−1)s₁ — free online calculator.

Egyptian Fraction Calculator

Egyptian Fraction Calculator The Egyptian Fraction Calculator expresses a proper fraction as a sum of distinct unit fractions using the greedy (Fibonacci–Sylvester) algorithm. Enter a numerator and denominator. — free online calculator.

Eigenvalue and Eigenvector Calculator

Eigenvalue and Eigenvector Calculator (2×2) The Eigenvalue and Eigenvector Calculator finds the eigenvalues and eigenvectors of a 2×2 matrix by solving its characteristic equation. Enter the four matrix entries. — free online calculator.

Elimination Method Calculator

Elimination Method Calculator (2×2) The Elimination Method Calculator solves a 2×2 system of linear equations for x and y. Enter the coefficients and constants for both equations. — free online calculator.

Ellipse Standard Form Calculator

Ellipse Standard Form Calculator The Ellipse Standard Form Calculator builds the standard equation of an ellipse and finds its foci distance, eccentricity, and area. Enter the center and the two semi-axes. — free online calculator.

Endpoint Calculator

Endpoint Calculator Find an endpoint given a midpoint and the other endpoint. — free online calculator.

Engineering Notation Calculator

Engineering Notation Calculator The Engineering Notation Calculator writes a number with an exponent that is a multiple of three, matching SI prefixes like kilo, mega and milli. Enter a number. — free online calculator.

Equivalent Fractions Calculator

Equivalent Fractions Calculator The Equivalent Fractions Calculator lists fractions equal to the one you enter and shows its simplest form. Enter a numerator and denominator. — free online calculator.

Equivalent Ratio Calculator

Equivalent Ratio Calculator The Equivalent Ratio Calculator finds the missing term in a proportion A:B = C:D. Enter three of the four values and it solves for the fourth, keeping the ratios equal. — free online calculator.

Euclidean Algorithm Calculator

Euclidean Algorithm Calculator (GCD) The Euclidean Algorithm Calculator finds the greatest common divisor (GCD) of two integers using repeated division, and also gives the least common multiple (LCM). Enter two whole numbers. — free online calculator.

Euler's Formula for Polyhedra Calculator

Euler's Formula for Polyhedra Calculator Euler's Formula Calculator uses V − E + F = 2 to find the missing count of vertices, edges, or faces of a convex polyhedron. Enter the vertices and edges to find the faces. — free online calculator.

Expanded Form Calculator

Expanded Form Calculator The Expanded Form Calculator breaks a whole number into the sum of its place values (for example 3254 = 3000 + 200 + 50 + 4). Enter a whole number. — free online calculator.

Exponential (Scientific) Notation Calculator

Exponential (Scientific) Notation Calculator The Exponential Notation Calculator writes any number in scientific notation as a coefficient times a power of ten. Enter a number. — free online calculator.

Fifth Root Calculator

Fifth Root Calculator Fifth Root is a fast, free math calculator. Enter Number to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser. — free online calculator.

Foci of Ellipse Calculator

Foci Of Ellipse Find the foci of an ellipse from its semi-major and semi-minor axes. Calculate focal distance (c) and eccentricity. The foci are the two fixed points that define an ellipse: any point on the ellipse has a constant sum of distances to the t — free online calculator.

Focus & Attention Calculator

Focus & Attention Calculator Plan your focus sessions and see how much real focused work you fit into a day. Enter your focus-session length, break length and number of sessions, and the calculator returns your daily focus hours, the ratio of focus time t — free online calculator.

Foil

Foil — free online calculator.

Fourth Root Calculator

Fourth Root Calculator Calculate the fourth root of any non-negative number. Fourth root is the inverse of raising a number to the 4th power: ⁴√n = n^0.25. Example: ⁴√81 = 3 (because 3⁴ = 81). — free online calculator.

Fraction Calculator

Fraction Calculator Popular Fraction Calculator is a mathematics calculator that helps you calculate fraction values from your input data. The formula used is: Reduce by dividing numerator and denominator by their GCD. Addition: a/b + c/d = (ad+bc)/(bd). — free online calculator.

Fraction to Decimal Calculator

Fraction to Decimal Convert Fraction to Decimal instantly. Enter any value in Fraction to get the exact equivalent in Decimal, with the conversion formula, worked example and quick reference points shown below. — free online calculator.

Fractional Exponent Calculator

Fractional Exponent Calculate fractional exponents: a^(m/n) = ⁿ√(a^m). For example, 8^(2/3) = ³√(8²) = ³√64 = 4. Fractional exponents represent roots and are essential in algebra and calculus. — free online calculator.

Gamma Function Calculator

Gamma Function Calculator The Gamma Function Calculator evaluates Γ(x), the continuous extension of the factorial, using the Lanczos approximation. Enter a value of x. — free online calculator.

GCF Calculator

GCF Calculator (Greatest Common Factor) Find the Greatest Common Factor (GCF) of two numbers using the Euclidean algorithm. — free online calculator.

Gram-Schmidt Calculator

Gram-Schmidt Calculator (2D) The Gram-Schmidt Calculator turns two 2D vectors into an orthogonal (and orthonormal) basis using the Gram-Schmidt process. Enter the components of both vectors. — free online calculator.

Harmonic Number Calculator

Harmonic Number Calculator Calculate the Nth harmonic number. H(n) = 1 + 1/2 + 1/3 + ... + 1/n. — free online calculator.

Heron's Formula Calculator

Heron's Formula Calculator Calculate the area of a triangle from its three side lengths using Heron's formula. — free online calculator.

Hypotenuse Calculator

Hypotenuse Calculator Calculate the hypotenuse of a right triangle. — free online calculator.

I Number

I Number — free online calculator.

Improper Fraction to Mixed Number Calculator

Improper Fraction to Mixed Number Calculator The Mixed Number Calculator converts an improper fraction into a whole number plus a proper fraction, simplified. Enter the numerator and denominator. — free online calculator.

Integer

Integer — free online calculator.

Integration by Completing the Square Calculator

Integration by Completing the Square Calculator The Integration by Completing the Square Calculator rewrites a quadratic ax² + bx + c in vertex form a(x + d)² + e, which is the key step for integrating or finding the vertex. Enter a, b and c. — free online calculator.

Inverse Cosine (arccos) Calculator

Inverse Cosine (arccos) Calculator The Inverse Cosine (arccos) Calculator finds the angle whose cosine equals a value between -1 and 1, shown in both degrees and radians. The formula used is: arccos(x) = the angle θ such that cos(θ) = x, with the result i — free online calculator.

Inverse Sine (arcsin) Calculator

Inverse Sine (arcsin) Calculator The Inverse Sine (arcsin) Calculator finds the angle whose sine equals a value between -1 and 1, shown in both degrees and radians. The formula used is: arcsin(x) = the angle θ such that sin(θ) = x, with the result in [-90 — free online calculator.

Inverse Tangent (arctan) Calculator

Inverse Tangent (arctan) Calculator The Inverse Tangent (arctan) Calculator finds the angle whose tangent equals a value, and also computes atan2(y, x) for full-circle direction. The formula used is: arctan(x) returns an angle in (-90°, 90°); atan2(y, x) — free online calculator.

Inverse Trigonometric Calculator

Inverse Trigonometric Calculator The Inverse Trigonometric Calculator finds the angle whose sine, cosine, or tangent equals a given value, in both degrees and radians. Choose the function and enter the value. — free online calculator.

Involute Function Calculator

Involute Function Calculator The Involute Function Calculator computes inv(α) = tan α − α (with α in radians), used in gear tooth geometry. Enter the pressure angle in degrees. — free online calculator.

IQR Calculator

IQR Calculator (Interquartile Range) IQR Calculator (Interquartile Range) is a mathematics calculator that helps you calculate material quantities needed for a construction or renovation task. The formula used is: IQR = Q3 − Q1 · Lower fence = Q1 − 1.5×IQ — free online calculator.

Isosceles Trapezoid Calculator

Isosceles Trapezoid Calculator The Isosceles Trapezoid Calculator finds the height, area, and perimeter of an isosceles trapezoid from its two parallel sides and its equal legs. Enter the sides. — free online calculator.

Lagrange Error Bound Calculator

Lagrange Error Bound Calculator The Lagrange Error Bound Calculator estimates the maximum error of a Taylor polynomial approximation. Enter the bound on the (n+1)th derivative, the point x, the center a, and the degree n. — free online calculator.

Latus Rectum Calculator

Latus Rectum Calculator (Parabola) The Latus Rectum Calculator finds the length of the latus rectum of a parabola y² = 4ax, the focal chord perpendicular to the axis. Enter the value of a. — free online calculator.

Lcd

Lcd — free online calculator.

Line of Intersection of Two Planes Calculator

Line of Intersection of Two Planes Calculator The Line of Intersection of Two Planes Calculator finds the direction vector of the line where two planes meet, using the cross product of their normal vectors. Enter each plane's normal (a, b, c). — free online calculator.

Linear Combination Calculator

Linear Combination Calculator (2D) The Linear Combination Calculator computes c₁·v₁ + c₂·v₂ for two 2D vectors and two scalars. Enter the scalars and vector components. — free online calculator.

Log 2 Calculator

Log 2 Calculator: calculate log base 2 from explicitly entered values.

Long Multiplication Calculator

Long Multiplication Calculator The Long Multiplication Calculator multiplies two whole numbers and shows the partial products from each digit of the second number. Enter both numbers. — free online calculator.

Lottery Probability Calculator

Calculate exact lottery jackpot probability and 1-in-N odds for uniform draws without replacement and optional independent bonus outcomes.

Lowest Common Denominator Calculator

Lowest Common Denominator Calculator Calculate the Lowest Common Denominator (LCD) of two fractions. LCD = (denom1 × denom2) / GCD(denom1, denom2). — free online calculator.

Lowest Term Calculator

Reduce Fraction to Lowest Terms Simplify a fraction to its lowest terms (reduce to simplest form). Divide numerator and denominator by their GCD. — free online calculator.

Matrix Calculator

Matrix Calculator (2×2) Matrix Calculator (2×2) is a mathematics calculator that helps you calculate matrix calculator (2×2) values from your input data. The formula used is: Add/subtract element-by-element. Multiply: each result entry is the dot product — free online calculator.

Matrix Euclidean Norm Calculator

Matrix Euclidean Norm Calculator Calculate Euclidean (Frobenius) norm of a matrix. Norm = √(sum of squares of all elements). — free online calculator.

Matrix Rank Calculator

Matrix Determinant (2×2 & 3×3) Calculate determinant of 2×2 or 3×3 matrix (educational). Det(2×2) = ad-bc. Det(3×3) = a(ei-fh) - b(di-fg) + c(dh-eg). — free online calculator.

Midpoint Calculator

Midpoint Calculator Find the midpoint between two points in 2D or 3D space. — free online calculator.

Miracle Odds Calculator

Miracle Odds Calculator (Littlewood's Law) The Miracle Odds Calculator applies Littlewood's Law idea: given the odds of a rare event and how many chances you get per day, it estimates how long until it happens. Enter the odds and daily chances. — free online calculator.

Mixed Number to Improper Fraction Calculator

Mixed Number to Improper Fraction Calculator The Mixed Number to Improper Fraction Calculator converts a whole number and fraction into a single improper fraction, simplified. Enter the whole number, numerator, and denominator. — free online calculator.

Mobile App Size Calculator

Mobile App Size Calculator The Mobile App Size Calculator estimates an app's download and install size from its code size and image and audio assets. Total = base code + image assets + audio assets; download ≈ 70% of total (compressed) and install ≈ 130% — free online calculator.

Modulo (Remainder) Calculator

Modulo (Remainder) Calculator Calculate remainder: a mod b (integer division remainder). — free online calculator.

Modulo Order of Operations Calculator

Modulo Order of Operations Calculator The Modulo Order of Operations Calculator returns the remainder after dividing one number by another, along with the integer quotient. Enter the dividend and divisor. — free online calculator.

Multiplicative Inverse Calculator

Multiplicative Inverse Find multiplicative inverse (reciprocal) of a number. Formula: Inverse = 1 / n. Example: 1/2 = 0.5, 1/4 = 0.25. Property: n × (1/n) = 1 — free online calculator.

Multiplicative Inverse Modulo Calculator

Multiplicative Inverse mod n Find multiplicative inverse modulo n. Formula: Find x such that (a × x) ≡ 1 (mod n). Used in cryptography. Requires GCD(a, n) = 1. — free online calculator.

Negative Log Calculator

Negative Log Calculator: calculate negative base-10 logarithm using defined numerical inputs.

Null Space Calculator

Null Space Calculator (2×2) The Null Space Calculator finds the nullity and a basis for the null space (kernel) of a 2×2 matrix. Enter the four matrix entries. — free online calculator.

Ones Complement Calculator

Ones Complement Find ones complement (bit flip) of a binary number. Flips all bits: 0→1, 1→0. For 8-bit: flip each bit independently. Example: 00001111 → 11110000 — free online calculator.

Order of Magnitude Calculator

Order of Magnitude Calculate order of magnitude of a number. Formula: Order = floor(log₁₀(n)). Shows approximate scale: 100 is 10², 1000 is 10³. Used in scientific approximations. — free online calculator.

Orthocenter Calculator

Orthocenter — Horizontal-Base Triangle — limited numerical model with explicit assumptions.

Parabola Calculator

Parabola Calculator Find key features of a parabola y = ax² + bx + c. — free online calculator.

Partial Products Old Calculator

Partial Products Multiplication Demonstrate partial products multiplication method. Shows how (a×10+b)×(c×10+d) breaks into parts. Educational math technique. — free online calculator.

Percentage of a Number Calculator

Percentage of a Number Calculator Popular Percentage of a Number Calculator is a mathematics calculator that helps you calculate a percentage from a part and a whole, or a percentage change. The formula used is: A% of B = (A ÷ 100) × B. Ensure all inputs share the same unit syst — free online calcul

Permutation Calculator

Permutation Calculator (nPr) Permutation Calculator (nPr) is a mathematics calculator that helps you calculate permutation calculator (npr) values from your input data. The formula used is: nPr = n! / (n−r)! · nCr = n! / (r! × (n−r)!). Ensure all inputs s — free online calculator.

Pi (π) Calculator

Pi (π) Calculator Calculate circumference and area using Pi. — free online calculator.

Polar Form Calculator

Complex Number Polar Form Complex Polar Form converts rectangular (a+bi) to polar (r∠θ). Formula: r = √(a²+b²); θ = atan2(b,a). — free online calculator.

Polar to Cartesian Calculator

Polar to Cartesian Conversion Convert polar coordinates (r, θ) to Cartesian (x, y). Formulas: x = r·cos(θ), y = r·sin(θ). Used in navigation, physics, engineering. — free online calculator.

Polar to Rectangular Calculator

Polar to Rectangular Conversion Convert polar coordinates (r, θ) to rectangular (x, y). Formulas: x = r·cos(θ), y = r·sin(θ). Same as Cartesian; used interchangeably. — free online calculator.

Polynomial Division Calculator

Polynomial Synthetic Division Synthetic Division for polynomials. Formula: Divide ax³+bx²+cx+d by (x−k) using synthetic division algorithm. — free online calculator.

Power Function Calculator

Power Function Calculator Calculate power (in watts) from energy (in joules) and time (in seconds). Power is the rate at which energy is transferred or used: P = E/t. Essential for physics, engineering, and energy calculations. — free online calculator.

Power Reducing Calculator

Power Reducing Formula (Trigonometry) Power-reducing formulas convert higher powers of trig functions to first power (for integration). — free online calculator.

Powers of 10 Calculator

Powers of 10 Calculator Powers of 10 is a fast, free math calculator. Enter Exponent (n) to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your br — free online calculator.

Powers of 2 Calculator

Powers of 2 Calculator Calculate 2 raised to a power: 2^n (binary powers). — free online calculator.

Prisoners Dilemma Calculator

Prisoners' Dilemma Payoff Analyze Prisoners' Dilemma payoff matrix. Shows outcomes for Cooperate vs Defect strategies. Educational game theory reference. — free online calculator.

Pseudoinverse Calculator

Matrix Pseudoinverse (2x2) Calculate Moore-Penrose pseudoinverse for 2x2 matrix. Formula: A+ = (A^T · A)^(-1) · A^T. Used for solving least-squares problems. — free online calculator.

Pyramid Angle Calculator

Pyramid Face Angle Calculate pyramid face (slant) angle. Formula: angle = arctan(height / (base/2)). Used in architecture and geometry. — free online calculator.

Pyramid Volume Calculator

Pyramid Volume Calculator Calculate the volume of a pyramid using base area and height. Works for square, rectangular, and triangular pyramids. Volume = (1/3) × base area × height. — free online calculator.

Pythagorean Theorem Calculator

Pythagorean Theorem Calculator Popular Pythagorean Theorem Calculator is a mathematics calculator that helps you calculate pythagorean theorem values from your input data. The formula used is: a² + b² = c². Find hypotenuse: c = √(a² + b²). Find a leg: a = — free online calculator.

Quarter Circle Calculator

Quarter Circle Calculator Calculate quarter circle properties: area and perimeter using radius. — free online calculator.

Quarter Circle Perimeter Calculator

Quarter Circle Perimeter Calculator Calculate the perimeter of a quarter circle. Perimeter = (π × r / 2) + 2r (arc length plus two radii). — free online calculator.

Quaternion Calculator

Quaternion Magnitude Calculate quaternion magnitude. Formula: |q| = √(w²+x²+y²+z²). Used in 3D rotations and graphics. Educational reference. — free online calculator.

Queueing Theory Calculator

M/M/1 queue calculator for arrival rate λ and service rate μ. Requires μ > λ and returns the expected queue length Lq.

Radical Calculator

Radical Simplification Simplify square radicals. Formula: √(a²b) = a√b. Extracts perfect squares from radicand. Educational algebra tool. — free online calculator.

Radius of Cone Calculator

Cone Radius from Volume Find cone radius given volume. Formula: r = √(3V/(πh)). Solve for base radius from volume and height. — free online calculator.

Radius of Cylinder Calculator

Cylinder Radius from Volume Find cylinder radius from volume. Formula: r = √(V/(πh)). Solves for radius given volume and height. — free online calculator.

Ratio Calculator

Ratio Calculator Popular Ratio Calculator is a mathematics calculator that helps you calculate the ratio between two numbers in simplified form. The formula used is: Simplify: divide both terms by their GCD. Proportion: if a:b = c:d, then d = (b × c) / a. — free online calculator.

Ratio of 2 Numbers Calculator

Ratio of 2 Numbers Calculator The Ratio of 2 Numbers Calculator simplifies two numbers into their lowest-terms ratio and also shows the decimal and percentage relationship between them. — free online calculator.

Rational Exponents Calculator

Rational Exponents Calculator Calculate powers with fractional exponents. Formula: base^(m/n) = ⁿ√(base^m). Example: 8^(2/3) = ³√(8²) = 4. — free online calculator.

Rational Zeros Theorem Calculator

Rational Zeros Theorem Calculator Find possible rational zeros using Rational Root Theorem. Candidates = ±(factors of constant) / (factors of leading coefficient). — free online calculator.

Rationalize Denominator Calculator

Rationalize Denominator Calculator Rationalize fractions with square roots in denominator. Multiply by conjugate to eliminate radicals. — free online calculator.

Reciprocal Calculator

Reciprocal Calculator Reciprocal is a fast, free math calculator. Enter Number to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser. — free online calculator.

Rectangle Calculator

Rectangle Calculator Calculate area, perimeter, and diagonal of a rectangle. — free online calculator.

Rectangle Scale Factor Calculator

Rectangle Scale Factor Calculator The Rectangle Scale Factor Calculator resizes a rectangle by a scale factor and shows the new dimensions, plus how the perimeter and area change. Enter the original size and scale factor. — free online calculator.

Regular Decagon Calculator

Regular Decagon Calculator Calculate area and perimeter of a regular decagon. — free online calculator.

Remainder Calculator

Remainder Calculator Calculate the remainder of integer division. — free online calculator.

Reverse FOIL (Factoring) Calculator

Reverse FOIL (Factoring) Calculator Factor a quadratic expression ax² + bx + c into (mx + n)(px + q). Reverse FOIL method. — free online calculator.

Reverse Polish Notation Calculator

Reverse Polish Notation Calculator Reverse Polish Notation (RPN) evaluates postfix expressions. Format: '3 4 +' = 7; '5 3 -' = 2; '2 3 *' = 6. — free online calculator.

Screen Aspect Ratio Calculator

Screen Aspect Ratio Calculator Work out the simplified aspect ratio of a screen, image or video from its width and height, identify common names like 16:9 or 4:3, and scale the resolution to a new width while keeping the same proportions. Enter the pixel — free online calculator.

Sprint Velocity Calculator

Sprint Velocity Calculator (Agile) Sprint Velocity Calculator (Agile) is a mathematics calculator that helps you calculate speed or velocity from a given distance and time. The formula used is: Points per Person = Velocity ÷ Team Size\nPoints per Day = Ve — free online calculator.

Test Score Estimator

Test Score Estimator (GMAT/GRE Style) Test Score Estimator (GMAT/GRE Style) is a mathematics calculator that helps you calculate academic scores or grade equivalents. The formula used is: Raw Score = Correct ÷ Total × 100\nScaled Score = Accuracy × Diffic — free online calculator.

Triangle Area from Coordinates Calculator

Triangle Area from Coordinates Calculator Find the area of a triangle from the coordinates of its three vertices using the shoelace formula. Enter the (x, y) points for A, B and C, and the calculator returns the area as ½ × |x₁(y₂−y₃) + x₂(y₃−y₁) + x₃(y₁− — free online calculator.

Triangle Calculator

Triangle Calculator Popular Triangle Calculator is a mathematics calculator that helps you calculate triangle side lengths, angles, or area. The formula used is: Area = √(s(s−a)(s−b)(s−c)) where s = (a+b+c)/2 (Heron's formula). Angle A = arccos((b²+c²−a²) — free online calculator.

Trig Function Value Calculator

Trig Function Value Calculator The Trig Function Value Calculator gives the sine, cosine, tangent, and their reciprocals for any angle. Enter the angle in degrees to see all six function values. — free online calculator.

Volume Calculator

Volume Calculator Popular Volume Calculator is a mathematics calculator that helps you calculate the volume of a three-dimensional shape or container. The formula used is: Cube: a³. Rectangular prism: l×w×h. Cylinder: πr²h. Cone: ⅓πr²h. Sphere: 4/3 πr³. P — free online calculator.