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Mathematics

Regular Polygon Calculator

Variable Legend

n= number of sidess= side lengtha= apothem (center to midpoint of side)A= areaP= perimeter

Perimeter

Total length of all sides.

Interior angle

Each interior angle of a regular polygon.

Area (from side length)

Using the apothem derived from the side.

Area (from apothem)

Half the perimeter times the apothem.

Apothem from side length

Perpendicular distance from center to a side.

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Pro Tip

Always verify your input values before calculating. For polygon, small input errors can compound and significantly affect the final result.

Difficulty:Intermediate

Did you know?

Honeycombs use regular hexagons because they tile the plane perfectly and use the least wax for the most storage area — a property mathematically proven in 1999.

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Reviewed May 2026
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