Circle circumference
Geometry / FREE CALCULATOR
Calculate the distance around a circle.
Your answer starts here.
Enter your values and select Calculate to see the result and any available breakdown.
How to use this calculator
- Enter radius. Use the unit shown beside the field.
- Select Calculate and review the result. Select Reset to restore the example inputs.
How the calculation works
2*3.141592653589793*Radius
Worked example
Radius = 2. Result: 12.5664 length units.
Understand your result
Calculate the distance around a circle. The result is expressed in length units.
Assumptions and limitations
Enter radius rather than diameter. Results are rounded for display.
Questions about this tool
What does this tool calculate?
Calculate the distance around a circle.
What should I check before using the answer?
Enter radius rather than diameter.
Related guides
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