Regular polygon calculator
Calculate regular polygon with explicit inputs, validation, and a documented formula.
Regular polygon calculator
Result64.9519052838
How to use this tool
- Enter the known values.
- Select Calculate to process the inputs.
- Review the result, formula, and calculation steps.
Worked example
Follow this example to see the method in practice.
Formula
perimeter = side count × side length; area = ns² ÷ (4 tan(π/n))
Frequently asked questions
Formula
The formula below shows how the result is calculated.
Important information
Results are estimates for general informational purposes. Check important decisions with an appropriate professional or primary source.