Angle Converter

Convert between degrees, radians, gradians, turns, arcminutes, and arcseconds.

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Frequently Asked Questions

How many radians in 180 degrees?

180 degrees equals π radians, approximately 3.14159 radians.

What is a gradian?

A gradian (or gon) is 1/400 of a full circle. A right angle is 100 gradians. It is used in surveying and some European countries.