Regular Polygon Area Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the number of sides and the side length.
- Press Calculate.
How it works
Area = (n × side²) ÷ (4 × tan(π ÷ n)) for an n-sided regular polygon.
Worked example
6 sides, 2 m. ≈ 10.39 m² (a hexagon).
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.