Last updated: March 2, 2026 by Dr. David Park

How to Convert Degrees to Radians

Formula

radians = degrees × π / 180

To convert degrees to radians, multiply the degree value by π/180. Radians are the standard unit of angular measure in mathematics and physics.

This calculator also shows the result as a multiple of π so you can identify common exact values like π/6, π/4, π/3, and π/2.

Common use cases:

  • Trigonometry calculations requiring radian input
  • Programming math functions that expect radians
  • Physics angular velocity problems

Frequently Asked Questions

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Dr. David Park

Applied Mathematician, PhD Mathematics

David holds a PhD in Applied Mathematics from MIT. He has published research on numerical methods and computational algorithms used in engineering and scientific calculators.

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