Convert the angle in degrees (or grads) to radians, and vice versa.
Angular measurements are commonly expressed in units of degrees, minutes, and seconds (DMS). This converter can be useful on all types of angle designation conversions: radians - grads - degrees (both, decimal form and degree, minutes, seconds form). Enter a numeric value appropriate for the designation you want to calculate and convert. The values returned will be for all of the other designations.
To convert degrees to radians, multiply the degrees by pi/180.
To convert grads to radians, multiply the grads by pi/200.
Pi is equal to a circle's circumference divided by its diameter, where pi equals 3.141592653589793...