Inverse Tangent (arctan) Calculator
Result
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.
Formula
- Inverse Tangent (arctan) Calculator calculates its result from x. It uses the formula atan(x)*180/pi. Change any input to recalculate the result instantly.
- The main inputs are x. Enter them in the units and format shown in the calculator.
- Keep comparable quantities in compatible units whenever the formula combines or compares them.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Inverse Tangent (arctan)
- x: 1
Using x = 1, the calculated result is 45.
Sample result: Calculating…
Frequently asked questions
What does the Inverse Tangent (arctan) calculate?
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.
Which values should I enter?
Enter x using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: atan(x)*180/pi.
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.