Angle Converter Calculator
Enter an angle in degrees to convert it into radians and gradians.
Angle Converter Calculator
Converts an angle from degrees into radians and gradians.
This calculator converts an angle entered in degrees into both radians (the standard unit used throughout mathematics, physics and programming trigonometric functions) and gradians (a less common but still-used unit, particularly in surveying, where a full circle equals 400 gradians). It's useful whenever you need to translate a degree measurement for use in a formula, programming language, or instrument that expects a different angular unit.
Example
- With the default values shown above, this calculator returns: Radians ≈ 1.5708 rad; Gradians ≈ 100 grad.
Frequently Asked Questions
What is a radian?
A radian is the standard mathematical unit of angle, defined so that a full circle equals 2π radians (about 6.2832 radians) rather than 360 degrees.
What is a gradian?
A gradian (or 'gon') divides a full circle into 400 equal parts instead of 360, so a right angle equals exactly 100 gradians — it's mainly used in surveying and some European engineering contexts.
Sources
- Standard formula, publicly documented method