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Calixo

Angle Converter

Convert between degrees and radians instantly.

Inputs

Saved Scenarios

— select 2+ to compare

Result

3.14159

Spark says

How it's calculated

Formula

Radians=Degrees×π180Radians = Degrees \times \dfrac{\pi}{180}
\pi
— Approximately 3.14159

What is the Angle Converter?

Degrees and radians are two ways of measuring angles — a full circle is 360 degrees or 2π radians. This calculator converts between them.

How to use it

  1. 1 Enter the angle value.
  2. 2 Choose the conversion direction.

Worked examples

180 degrees to radians

180° equals π radians (about 3.14159).

Try it

Frequently asked questions

Why do some fields use radians instead of degrees?

Radians simplify many mathematical formulas (especially calculus and trigonometry), since they're defined directly from the circle's radius rather than an arbitrary 360-unit division.

Sources & references