circumference calculator

enter the value and click "calculate", the calculation result will be displayed.

formula:
C = 2πr

enter the radius in centimeters:

calculation result:

circumference (cm):
diameter (cm):
area (cm2) :
what is the circumference of the circle? the perimeter is the straight-line distance that makes up the path of a circle. to make this idea clearer, the distance you will travel if you move along the edge of the circle.
search calculator