Introduction to online angle to radian converter

Angle conversion, the angle system is an example of using base 60.

An angle that stipulates that 1/360th of a circumferential angle is 1 degree. The unit system that uses degrees as the unit to measure angles is called the angle system.

Note that "degree" is a unit, not "1 degree", because the definition of a unit is the name of a standard quantity for measuring things.