Hexagon Calculator
Enter a side length to calculate area, perimeter, apothem, and diagonals of a regular hexagon.
This tool is for informational and educational purposes only. It is not a substitute for professional financial, medical, legal, or engineering advice. See Terms of Service.
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Request a ToolHow to Use the Hexagon Calculator
This calculator finds all properties of a regular hexagon from a single side length.
- Enter the side length. Type the length of one side of the regular hexagon.
- Read the results. The calculator instantly computes the area, perimeter, apothem, and both diagonal lengths.
- Share or copy. Use the buttons to save or share your result.
A regular hexagon has six equal sides and six equal angles of 120 degrees each. All calculations run in your browser with no data sent to any server.
About Hexagons
A regular hexagon can be divided into six equilateral triangles, which makes its area easy to compute: Area = (3 * sqrt(3) / 2) * s^2, where s is the side length. The perimeter is simply 6s. Hexagons appear frequently in nature, including honeycombs and crystal structures, because they tile a plane with no gaps while minimizing perimeter for a given area. The apothem is the distance from the center to the midpoint of a side.
Frequently Asked Questions
What is the formula for hexagon area?
The area of a regular hexagon with side length s is (3 * sqrt(3) / 2) * s^2, which is approximately 2.598 * s^2.
What is the apothem of a hexagon?
The apothem is the distance from the center to the midpoint of any side. For a regular hexagon with side s, the apothem equals (sqrt(3)/2) * s.
How many diagonals does a hexagon have?
A hexagon has 9 diagonals. There are two distinct diagonal lengths in a regular hexagon: the short diagonal (sqrt(3) * s) and the long diagonal (2s).