Polygon area calculator (n-sided)
Regular n-gon: A = ¼ n s² cot(π/n) · Apothem a = s/(2 tan(π/n))
- Area
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- Perimeter
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- Apothem
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- Circumradius
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- Interior angle
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About this tool
Polygon area calculator (n-sided) is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
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