Find regular heptagon area, perimeter, and apothem
Result
Heptagon Area
Step-by-Step Derivation
Heptagon Area Formula
A = 7s² / (4 tan(π / 7))
A regular heptagon has seven equal sides and seven equal angles. The regular polygon formula uses the side length and number of sides to calculate its area.
⚠This calculator is for regular heptagons only. Side length must be positive.
How Heptagon Area Works
The shape can be divided into seven equal central triangles. Adding those triangle areas gives the full regular heptagon area.
Seven Sides
A heptagon has seven sides.
Regular Shape
All sides and angles are equal.
Perimeter
Perimeter equals 7s.
Apothem
Center-to-side distance is also shown.
💡 Example: For s=5, the area is about 90.847, perimeter is 35, and apothem is 5.191.
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