Want to calculate the circumference of a circle? Cool, try this calculator.
This circumference of a circle calculator will figure out the circumference of any circle given the radius, the diameter, or the area of the circle.
If you know the radius of a circle, you can calculate the circumference based on the following formula:
C = 2 ϖ r
where
C = Circumference
ϖ = Pi = 3.14159265...
r = Radius
If you know the diameter of a circle, you can calculate the circumference based on the following formula:
C = ϖ d
where
C = Circumference
ϖ = Pi = 3.14159265...
d = Diameter
If you know the area of a circle, you can calculate the circumference based on the following formula:
where
C = Circumference
A = Area
ϖ = Pi = 3.14159265...