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## Related Tools

- Calculate circumference of circle from diameter
- Circle area to diameter calculator
- Circle radius to diameter calculator
- Length and distance converter
- Sphere volume to diameter calculator
- Sphere surface area to diameter calculator

## User Guide

This tool will calculate the diameter of a circle from the circumference, and will convert different measurement units for circumference and diameter.

#### Formula

The formula used to calculate the circle diameter is:

ø = C / π

###### Symbols

- ø = Circle diameter
- C = Circle circumference
- π = Pi = 3.14159…

#### Circumference of Circle

Enter the circumference which is the total length of the edge around the circle, if it was straightened out.

#### Diameter of Circle

This is the diameter of a circle that corresponds to the specified circumference. The diameter of a circle is the length of a straight line drawn between two points on a circle where the line also passes through the centre of a circle, or any two points on the circle as long as they are exactly 180 degrees apart.