Regular Pentagon 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 side length.
- Press Calculate.
How it works
Area = ¼ × √(5(5 + 2√5)) × side² ≈ 1.720 × side².
Worked example
2 m side. ≈ 6.88 m².
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.