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THE BIOLOGY COLLECTION

Biology Calculators

Biology, agriculture and yield calculations for study and field use.

93 calculators · 2 topics

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Dog Food Calculator

Dog Food Calculator Calculate how much food to feed your dog daily based on weight, age, and activity level using the Resting Energy Requirement (RER) formula. — free online calculator.

Corn Yield Calculator

Corn Yield Calculator Estimate corn field yield in bushels per acre using the standard ear count method (kernels per ear and ears per 1/1000 acre). — free online calculator.

Potting Soil Calculator

Potting Soil Calculator Calculator Calculate the volume of potting soil needed to fill a rectangular planter or round pot. — free online calculator.

Cat Calorie Calculator

Cat Daily Energy Estimate Calculator: a transparent calculation with explicit input units and scope.

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93 calculators

Biology & Agriculture

3 calculators

Corn Yield Calculator

Corn Yield Calculator Estimate corn field yield in bushels per acre using the standard ear count method (kernels per ear and ears per 1/1000 acre). — free online calculator.

Potato Yield Calculator

Potato Yield Calculator Estimate potato yield from seed and row data. Formula: Yield (lbs) = plants × avg_weight. — free online calculator.

Vegetable Yield Calculator

Vegetable Yield Calculator Estimate vegetable garden yield based on bed area and vegetable type using standard yield-per-square-foot data. — free online calculator.

More Biology Calculators

90 calculators

Annealing Temperature Calculator

Annealing Temperature Calculator The Annealing Temperature Calculator estimates the PCR annealing temperature from your primers' melting temperatures (Tm). It takes the lower of the two primer Tm values and subtracts an offset, then suggests a gradient ra — free online calculator.

Bulb Spacing Calculator

Bulb Spacing Calculator Calculate how many flower bulbs you need to fill a garden bed based on planting area and recommended spacing. — free online calculator.

Cat Benadryl Dosage Calculator

Convert a veterinarian-provided diphenhydramine dose for a cat into milligrams, tablet equivalents and optional liquid volume. No automatic dose recommendation.

Cat Calorie Calculator

Cat Daily Energy Estimate Calculator: a transparent calculation with explicit input units and scope.

Cat Quality Of Life Calculator

Cat Quality Of Life Calculator Score your cat's quality of life using the HHHHHMM scale (Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility, More good days). — free online calculator.

Compost Calculator

Compost Calculator Calculate the right balance of green and brown materials to achieve an ideal carbon-to-nitrogen (C:N) ratio for fast composting. — free online calculator.

Cow Gestation Calculator

Cow Gestation Calculator Calculate the expected calving date based on the breeding date. Average bovine gestation is 283 days. — free online calculator.

Cricket Chirp Thermometer Calculator

Cricket Chirp Thermometer Calculator Use Dolbear's Law to estimate outdoor temperature from the number of cricket chirps per minute. — free online calculator.

DNA Concentration Calculator

Estimate DNA concentration from A260 absorbance and dilution. Reports µg/mL (equivalent to ng/µL) with dsDNA, RNA and ssDNA factor guidance.

Dna Copy Number Calculator

Dna Copy Number Calculator Calculate the number of DNA copies per microliter from a known concentration and fragment length. — free online calculator.

Dna To Mrna Calculator

Convert a 5′→3′ coding (sense) DNA strand into the matching 5′→3′ mRNA sequence by replacing T with U. Not for template DNA.

Dog Bmi Calculator

Calculate a weight-to-height-squared index for a dog. This is a mathematical ratio, not a validated veterinary measure of body condition.

Dog Calorie Calculator

Dog Daily Energy Estimate Calculator: a transparent calculation with explicit input units and scope.

Dog Chocolate Toxicity Calculator

Dog Chocolate Toxicity Calculator Estimate the theobromine dose your dog received from chocolate and assess the toxicity risk level. — free online calculator.

Dog Food Calculator

Dog Food Calculator Calculate how much food to feed your dog daily based on weight, age, and activity level using the Resting Energy Requirement (RER) formula. — free online calculator.

Dog Metacam Calculator

Dog Metacam Calculator Calculate the Metacam (meloxicam) dose for dogs based on body weight for pain and inflammation management. — free online calculator.

Dog Onion Toxicity Calculator

Dog Onion Toxicity Calculator Assess the risk level if your dog ate onions, garlic, or other allium vegetables. — free online calculator.

Dog Quality Of Life Calculator

Dog Quality Of Life Calculator Evaluate your dog's quality of life using the HHHHHMM scale to guide care decisions for aging or ill pets. — free online calculator.

Dog Raisin Toxicity Calculator

Dog Raisin Toxicity Calculator Assess the risk when a dog eats grapes or raisins. No safe dose is known — any amount can be toxic. — free online calculator.

Dry Matter Calculator

Dry Matter Calculator Compare pet food nutrients on a dry matter basis to make accurate comparisons between wet and dry food. — free online calculator.

Fcr Calculator

Fcr Calculator Calculate the Feed Conversion Ratio (FCR) — the amount of feed required to produce one unit of weight gain in livestock. — free online calculator.

Fertilizer Calculator

Fertilizer Calculator Calculate how many pounds of fertilizer to apply based on lawn area, desired nitrogen rate, and fertilizer NPK content. — free online calculator.

Gdu Calculator

Gdu Calculator Calculate Growing Degree Units (GDUs) accumulated per day — a measure of heat accumulation used to predict crop and plant development. — free online calculator.

Goat Gestation Calculator

Goat Gestation Calculator Calculate the expected kidding date based on the mating date. Average goat gestation is 150 days. — free online calculator.

Grain Bin Calculator

Grain Bin Calculator Calculate the bushel capacity of a cylindrical grain bin based on its diameter and grain depth. — free online calculator.

Grass Seed Calculator

Grass Seed Calculator Calculate how many pounds of grass seed you need to seed or overseed your lawn. — free online calculator.

Hardy-Weinberg Calculator

Calculate expected genotype frequencies from the frequency p of allele A in a two-allele population.

Horse Gestation Calculator

Horse Gestation Calculator Calculate the expected foaling date based on the breeding date. Average equine gestation is 340 days. — free online calculator.

How Big Will My Cat Get Calculator

How Big Will My Cat Get Calculator Estimate your kitten's adult weight based on their current age and weight. — free online calculator.

Ligation Calculator

Ligation Calculator Calculate the amount of insert DNA needed for a ligation reaction based on vector amount, sizes, and desired molar ratio. — free online calculator.

Livestock Fence Calculator

Livestock Fence Calculator Calculate the amount of fencing materials (posts, wire, staples) needed to fence a pasture for livestock. — free online calculator.

Llama Calculator

Llama Calculator Calculate daily feed requirements, fiber yield, and gestation period for llamas. — free online calculator.

Mlvss Calculator

Mlvss Calculator Calculate Mixed Liquor Volatile Suspended Solids (MLVSS) from MLSS and the VSS/TSS ratio in a wastewater aeration basin. — free online calculator.

Mowing Cost Calculator

Estimate lawn mowing cost from lawn area, price per square meter and optional additional labor.

Mulch Calculator

Mulch Calculator Calculate how many cubic yards of mulch you need to cover a garden bed to a desired depth. — free online calculator.

Omega 3 For Dogs Calculator

Omega 3 For Dogs Calculator Calculate the recommended daily EPA+DHA omega-3 dose for dogs based on body weight and health goal. — free online calculator.

Pine Straw Calculator

Pine Straw Calculator Calculate how many bales of pine straw are needed to cover a garden bed or landscape area. — free online calculator.

Plants Calculator

Plants Calculator Calculate how many plants are needed to fill a garden bed based on the area and recommended plant spacing. — free online calculator.

Potting Soil Calculator

Potting Soil Calculator Calculator Calculate the volume of potting soil needed to fill a rectangular planter or round pot. — free online calculator.

Protein Concentration Calculator

Protein Concentration Calculator Calculate protein concentration from sample mass and volume. Converts between units: g/dL, mg/mL, mg/dL, mmol/L. Used in lab analysis, medical testing, and biochemistry. — free online calculator.

Protein Molecular Weight Calculator

Protein Molecular Weight Calculator Calculate protein molecular weight from amino acid composition. Converts between daltons (Da), kilodaltons (kDa), and megadaltons (MDa). Used in biochemistry, protein analysis, and molecular biology. — free online calculator.

Punnett Square Calculator

Punnett Square Calculator Calculate genetic cross probabilities using a Punnett square. Determines offspring genotype ratios from parent alleles for single-gene inheritance patterns. — free online calculator.

Qpcr Efficiency Calculator

Qpcr Efficiency Calculator Calculate qPCR amplification efficiency from the slope of the standard curve. — free online calculator.

Rabbit Color Calculator

Rabbit Color Calculator Predict the probability of coat color outcomes in rabbit offspring using basic Mendelian genetics for the black (B/b) locus. — free online calculator.

Rabbit Gestation Calculator

Rabbit Gestation Calculator Calculate the expected kindling (birth) date for a rabbit based on the breeding date. Average rabbit gestation is 31 days. — free online calculator.

Raw Dog Food Calculator

Raw Dog Food Calculator Calculate the daily raw food amount for your dog based on body weight and life stage — typically 2–3% of body weight. — free online calculator.

Sheep Gestation Calculator

Sheep Gestation Calculator Calculate the expected lambing date based on the breeding date. Average ovine gestation is 147 days. — free online calculator.

Swine Gestation Calculator

Swine Gestation Calculator Calculate the expected farrowing date based on the breeding date. Swine gestation averages 114 days (3 months, 3 weeks, 3 days). — free online calculator.

Tramadol For Dogs Calculator

Tramadol For Dogs Calculator Calculate the appropriate tramadol dose for dogs based on body weight for pain management. — free online calculator.

Tree Diameter Calculator

Tree Diameter Calculator Calculate a tree's diameter at breast height (DBH) from its trunk circumference, or vice versa. — free online calculator.

Tree Leaves Calculator

Tree Leaves Calculator Estimate the number of leaves on a deciduous tree based on its crown dimensions and leaf density. — free online calculator.

Tree Spacing Calculator

Tree Spacing Calculator Calculate how many trees can be planted per acre or in a defined area with a given spacing. — free online calculator.

Tree Value Calculator

Tree Value Calculator Estimate the monetary value of a landscape tree using the Council of Tree and Landscape Appraisers (CTLA) trunk formula method. — free online calculator.

Turtle Tank Calculator

Turtle Tank Calculator Calculate the minimum recommended aquarium size for a pet turtle based on shell length. — free online calculator.

Vapor Pressure Deficit Calculator

Calculate air and leaf vapor pressure deficit (VPD) from air temperature, relative humidity and an assumed or measured leaf temperature. Results in kPa.

Vegetable Seed Calculator

Vegetable Seed Calculator Calculate how many vegetable seeds to sow for a given row length or area based on plant spacing and germination rate. — free online calculator.

Wastewater Calculator

Wastewater Pollutant Mass Load Calculator: clearly defined inputs, output units, and assumptions.