Calculators

Angle Converter

Convert angles between degrees, radians, gradians, and turns.

Angle Converter

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What This Converter Does

An angle measures an amount of turn. The units just slice a full turn differently: one complete revolution is 360 degrees, or 2π radians, or 400 gradians - all the same spin, counted on different scales.

Convert an angle between degrees, radians, gradians, and turns (full revolutions).

How to Use It

  1. Enter the value.
  2. Choose the unit to convert from and to.
  3. Read the converted angle.

Worked Examples

FromToResult
180 degreesradians3.141593
90 degreesradians1.570796
1 turndegrees360
200 gradiansdegrees180

FAQ

How do you convert degrees to radians?

Multiply by π/180. So 180° = π radians ≈ 3.14159, and 90° ≈ 1.5708 radians.

What is a gradian?

A gradian splits a right angle into 100 parts, so a full turn is 400 gradians (90° = 100 gradians).