2-turn-to-radian.title

To convert degrees to radians, multiply the number of degrees by pi/180 (approximately 0.01745). For example, 180 degrees equals pi radians (approximately 3.14159).

A gradian (also called a gon or grade) divides a right angle into 100 parts. A full circle has 400 gradians. One gradian equals 0.9 degrees.