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Instant result
Enter the data and press the button to do the calculation.
Online Calculator
Regular polygon calculator
Enter the number of sides and their length to calculate the main properties of the polygon.
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Local processing
The values are processed directly in your browser.
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Frequently asked questions
What's a regular polygon?
It is a polygon whose sides and inner angles are the same.
How is the perimeter calculated?
Multiplying the number of sides by the length of each side.
How is the area calculated?
Area = perimeter × apothem / 2.
What is the minimum number of sides?
Three.