Ready to calculate. Enter the side length.


The Area Of A Hexagon Calculator is a smart mathematical tool designed to quickly determine the complete surface area inside a regular hexagon. A regular hexagon is a six-sided shape where every side and every internal angle is completely equal. This calculator allows you to input a single side length to find the exact area, perimeter, apothem and circumradius without manual calculations.

Hexagon Formula

A regular hexagon is essentially made of six identical equilateral triangles joined at the center. Because of this perfect symmetry, the formulas to find its measurements rely on the square root of 3. Here are the core formulas based on side length (a).

  • Area (A) = (3√3 / 2) * a²
  • Perimeter (P) = 6 * a
  • Apothem (r) = (a * √3) / 2
  • Circumradius (R) = a

How to Use This Calculator

Using this calculator is very fast and straightforward. Follow these instructions to determine your regular hexagon dimensions.

  • Enter the exact length of a single hexagon side in the input field.
  • Select the proper measurement unit from the dropdown menu next to the input.
  • The calculator instantly processes the geometry to show Area, Perimeter, Apothem and Circumradius.
  • You can easily switch unit dropdowns on the results to automatically convert the numbers to different metrics.

Common Calculation Examples

Below is a quick reference table showing accurate calculated values for common regular hexagons based on their side length. This is excellent for verifying schoolwork or double-checking material dimensions.

Side Length (a) Apothem (r) Perimeter (P) Calculated Area (A)
1 0.8660 6 2.5981
2 1.7321 12 10.3923
3 2.5981 18 23.3827
4 3.4641 24 41.5692
5 4.3301 30 64.9519
6 5.1962 36 93.5307
8 6.9282 48 166.2769
10 8.6603 60 259.8076

When This Calculator Is Useful

Hexagons are known as one of the most space-efficient shapes in geometry, which is why bees use them for honeycombs. This calculator is incredibly useful for laying hexagonal floor tiles, designing board games, calculating the surface of structural nuts and bolts in engineering, and verifying complex trigonometry assignments in education.

FAQ

What is the apothem of a hexagon?

The apothem is the straight distance from the exact center point of the hexagon directly to the middle of any of its flat sides. It acts as the inner radius of the shape and forms a perfect 90-degree angle with the side.

Why is the circumradius equal to the side length?

In a regular hexagon, the distance from the center point to any corner (circumradius) is exactly equal to the length of its outer sides. This happens because the shape is perfectly made of six equilateral triangles, where all three sides of each triangle are identical.

Does this tool work for irregular hexagons?

No. This specific tool and its formulas are strictly designed for regular hexagons where all sides and angles are equal. For irregular hexagons, the area must be calculated by breaking the shape down into smaller triangles.