A regular hexagon’s area and perimeter, computed directly from its side length.
How it works
A regular hexagon splits into six equal equilateral triangles, giving an area formula of (3√3 ÷ 2) times the side squared; the perimeter is simply six times the side.
What this does not include
This does not include irregular hexagons — this calculator specifically assumes all six sides and angles are equal.
How to use this calculator
- Enter the side length.
A worked example
A regular hexagon with side length 4: area = 41.569219, perimeter = 6 × 4 = 24.
Side length 1: area = 2.598076 — the base unit hexagon’s area, useful as a reference for scaling.
What the variables mean
| Variable | Meaning |
|---|---|
| Side length | Length of each of the hexagon’s six equal sides |
Edge cases worth knowing
This assumes a regular hexagon — all six sides and angles equal. An irregular hexagon needs a different approach, since a single side length can’t describe its shape.
Area scales with the square of the side length, not linearly — quadrupling the side length (from 1 to 4) multiplies the area by 16, matching 4².
Frequently asked questions
Why does the area formula involve the square root of 3?
It comes directly from the equilateral triangle area formula, since a regular hexagon is made of six identical equilateral triangles meeting at the center.
Where do regular hexagons appear in real life?
Honeycomb cells, nuts and bolts (hex heads), floor and wall tiling patterns, and many engineering and architectural designs.
Does doubling the side length double the area?
No — area scales with the side length squared, so doubling the side quadruples the area, the same squared-scaling rule that applies to every 2D shape.
