- Open the Arctangent Calculator and find the main field: Input.
- Type your values in that field. The placeholder shows an example format (Enter input...).
- Click "Run" to compute the result in your browser.
- Read the result in the Result section. Use Copy to paste the output elsewhere.
Arctangent Calculator
The Arctangent Calculator determines the inverse tangent of a given value.
Calculator
Enter the values described below, then run. Use Load sample to try a prefilled example when available.
Format hints
Enter input...
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
Enter input...
Output
Shown in the Result area after you click the action button.
Load sample
Use the Load sample button or Sample menu to paste a valid example.
Input
Enter input...
Output
Adjust values and run again; use Copy on the result if needed.
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.