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Regular Polygon Area Calculator (3–14 Sides)

Calculate the area of a regular polygon with 3 through 14 sides.

Polygon area: -
Visual representation

Regular Polygon Area Calculator (3–14 Sides) diagram

The diagram updates with your entries and is illustrative, not necessarily drawn to scale.

Calculation explained

How this result was calculated

The formula, your substituted values, and the evaluated result are shown below.

Enter a whole-number side count from 3 to 14. This formula assumes all sides and interior angles are equal.
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How the Regular Polygon Area Calculator (3–14 Sides) works

Calculate the area of a regular polygon with 3 through 14 sides.

Formula

sides × sideLength × sideLength ÷ (4 × tan(π ÷ sides))

How to use this calculator

  1. Enter every measurement using one consistent length or angle unit.
  2. Select Calculate to evaluate the formula.
  3. Review the substituted values in the calculation explanation.

Interpretation and limitations

Enter a whole-number side count from 3 to 14. This formula assumes all sides and interior angles are equal. Decimal answers are rounded for display; retain additional precision for subsequent calculations.

Geometry collection

This calculator belongs to the Plane Geometry section of the Math calculator library.

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