- Fill in Value. Each control is labeled; you do not need to paste a JSON blob.
- Click "Run" to run the tool in your browser.
- Read the result below the form and copy it if you need it in another app.
Arctangent Calculator
The Arctangent Calculator determines the inverse tangent of a given value.
Configuration for this calculator is missing.
How to Use This Tool
Learn More About Arctangent Calculator
Understanding Arctangent
The arctangent function, often written as atan(x) or tan⁻¹(x), is the inverse of the tangent function. It returns the angle whose tangent is the given number.
Radians vs. Degrees
Radians and degrees are both units for measuring angles. There are 2π radians in a full circle (360 degrees). To convert from radians to degrees, multiply by 180/π. To convert from degrees to radians, multiply by π/180.
Common Arctangent Values
- atan(0) = 0 degrees = 0 radians
- atan(1) = 45 degrees = π/4 radians
- atan(√3) = 60 degrees = π/3 radians
About
The Arctangent Calculator determines the inverse tangent of a given value. It returns the angle, expressed in degrees and radians, whose tangent is equal to the input.
Examples
Arctangent Calculator: quick try
Input
Input
1
Output
0.7853981633974483
Load sample
Use the Load sample button or Sample menu to paste a valid example.
Input
0
Output
0
Use Cases
- Calculating angles in trigonometry.
- Finding the angle of elevation or depression.
- Solving problems in physics and engineering that involve angles.
- Converting between rectangular and polar coordinates.