Math calculator

Regular Prism Base Formula Calculator

Calculate the regular polygon base area used in prism and pyramid formulas.

Number of base sidesBase side length

Base area: -

Visual representation

Regular Prism Base Formula Calculator diagram

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

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Calculation explained

How this result was calculated

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

The base must be a regular polygon with at least three sides. The result uses square units.

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How the Regular Prism Base Formula Calculator works

Calculate the regular polygon base area used in prism and pyramid formulas.

Formula

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

How to use this calculator

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

Interpretation and limitations

The base must be a regular polygon with at least three sides. The result uses square units. Decimal answers are rounded for display; retain additional precision for subsequent calculations.

Geometry collection

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