What is the formula for the perimeter of a regular hexagon?

The perimeter of a regular hexagon is P = 6s, where s is the length of one side. Because all six sides are equal, you simply multiply the side length by 6.

Does this work for irregular hexagons?

No. This calculator is for regular hexagons only, where all sides are equal. For an irregular hexagon, you would need to add up all six individual side lengths manually.

What units can I use?

You can enter measurements in millimeters (mm), centimeters (cm), meters (m), inches (in), feet (ft), or yards (yd). The result is shown in the same unit you select.

What is the difference between perimeter and area of a hexagon?

Perimeter is the total length of the boundary (P = 6s), while area is the space enclosed inside the hexagon (A = (3√3 / 2) × s²). This tool calculates perimeter only.

Can I enter decimal values?

Yes. Decimal side lengths are fully supported. For example, entering 2.5 cm gives a perimeter of 15.00 cm.

Perimeter of a Hexagon Calculator

Enter the side length of a regular hexagon and instantly get its perimeter using P = 6s.

Enter Side Length

Side Length (s)

Formula

P = 6 × s

where s is the side length

Result

Perimeter (P = 6s)

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Summary

A regular hexagon has six equal sides and six equal angles. Its perimeter is simply six times the side length (P = 6s). This calculator accepts any positive side length and any common unit of measurement, then displays the perimeter instantly along with a visual representation of the hexagon.

How it works

Enter the side length of your regular hexagon.
Select the unit of measurement (mm, cm, m, in, ft, or yd).
The calculator applies the formula P = 6s to compute the perimeter.
Results are displayed instantly with the chosen unit.
Use the copy button to copy the result to your clipboard.

Use cases

Calculate the amount of fencing needed for a hexagonal garden.
Determine the border length for a hexagonal tile or flooring project.
Solve geometry homework and verify manual calculations.
Find the perimeter of a hexagonal nut or bolt head for engineering tasks.
Compute trim lengths for hexagonal crafting projects.
Check the perimeter of a hexagonal room or architectural element.

Frequently Asked Questions

Last updated: 2026-05-23 · Reviewed by Nham Vu