Calculate the Circumference of a Circle
This will calculate the circumference of a circle based on its diameter.
Diameter
cm
Diameter
ft
in
Diameter
meters
Units
Circumference of a 3′6″ diameter circle
| 10.996 | feet |
| 131.95 | inches |
| 10′ 11.95″ | feet and inches |
| 3.3515 | meters |
| 335.15 | centimeters |
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.