Regular Polygon Area Calculator

Enter the apothem
No.of Sides of Polygon
Length of each side
Area of Polygon  =  120in2

Regular Polygon Calculator is an online tool for geometry calculation programmed to find out the Polygon Area for given values of apothem (inner circle radius), number of polygon sides and length of each side. This Polygon Calculator uses different converter function in order to generate the Output in different units such as Inches, Feet, Meters, Centimeters and Millimeters. In geometry, Polygon is a flat shape with at least three or more straight sides and angles

Regular Polygon
Regular Polygons Area Formula


The following mathematical formula is used in this regular plygon area calculator to find the area from the given input value of apothem, number of sides & length of side.
Rectangle Polygon Area A = (1/2) Apothem x No. of Sides x Length of side

The area of regular polygon may required to be calculated in SI or metric or US customary unit systems, therefore this calculator is featured with major measurement units conversion function to find the output values in different customary units such as inches (in), feet (ft), meters (m), centimeters (cm) & millimeters (mm) by using this below conversion table.

10 mm = 1 cm
100 mm = 3.93 in
1000 mm = 3.28 ft
1000 mm = 1 m
1 cm = 10 mm
10 cm = 3.93 in
100 cm = 3.28 ft
100 cm = 1 m
1 ft = 3048 mm
1 ft = 304.8 cm
1 ft = 12 in
10 ft = 3.048 m
1 in = 25.4 mm
1 in = 2.54 cm
100 in = 8.33 ft
100 in = 2.54 m

In the field of area & volume calculations, finding the regular polygon area is important to understand basic mathematical computations. The above formulas, step by step calculation & solved example may helpful for users to understand the how to calculate polygons's area manually, however, when it comes to online to perform quick calculations, this regular polygon calculator may be useful to find the results.