Calculate the Circumference of a Circle
This will calculate the circumference of a circle based on its diameter.
Circumference of a 3′6″ diameter circle
|10′ 11.95″||feet and inches|
results may be rounded
Circumference of a Circle Formula
The circumference of a circle is pi times its diameter.
Circumference = π * Diameter
Diameter of a Circle
The diameter of a circle is the distance from one edge to the other, passing through the center. It is twice the radius.