It supports degrees, radians, gradians, arcminutes, arcseconds, and turns.
Multiply the degree value by π/180. For example, 180 degrees equals π radians (approximately 3.14159).
Gradians (also called gon) are used in surveying and some European engineering fields. A full circle equals 400 gradians.
A full circle is 360 degrees, 2π radians, or 400 gradians.
Degrees divide a circle into 360 equal parts. Radians measure angles by the arc length on a unit circle. One radian equals approximately 57.296 degrees.
Radians simplify many mathematical formulas, especially in calculus and trigonometry. For example, the derivative of sin(x) is cos(x) only when x is in radians.
Multiply by π/180. So 45 × π/180 = π/4 radians, which is approximately 0.7854 radians.