๐ Geometry
Circumference Calculator
Circumference is the distance around a circle, equal to ฯ times the diameter. This is the calculation behind everything from bicycle wheel sizing to belt and pipe lengths.
How it works
Radius
Area
Circumference
Diameter
Area
Radius
Frequently asked questions
How do I use the Circumference Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.