Hexagon Calculator

Free Hexagon Calculator — instantly compute area, perimeter, circumscribed radius, and inscribed radius of a regular hexagon from any known value.

921.1K usesUpdated · 2026-04-29Runs locally · zero upload

How to Use Hexagon Calculator

The Hexagon Calculator makes it effortless to find any geometric property of a regular hexagon without manual computation.

  1. Select the known value — choose which measurement you already have: side length, area, perimeter, circumscribed radius, or inscribed radius.
  2. Enter the value — type the number in the input field. The Hexagon Calculator updates results instantly.
  3. Set your unit and decimal places — specify a unit label (cm, m, in, etc.) and how many decimal places you need.

The Hexagon Calculator displays all five key properties simultaneously, along with the formula used for each result, so you always know exactly how the answer was derived.

Formula & Theory — Hexagon Calculator

The Hexagon Calculator is built around the closed-form formulas for a regular hexagon with side length s:

Area         A = (3√3 / 2) × s²
Perimeter    P = 6s
Circumradius R = s
Inradius     r = (√3 / 2) × s
Symbol Meaning
s Side length of the regular hexagon
A Enclosed area
P Total perimeter (sum of six sides)
R Radius of the circumscribed circle (vertex to center)
r Radius of the inscribed circle (center to midpoint of a side)

A key insight exploited by the Hexagon Calculator: in a regular hexagon the circumscribed radius equals the side length (R = s), which makes the reverse calculations especially clean. Given any one value, the Hexagon Calculator solves for s first, then derives all other quantities from s.

Reverse Calculations

  • From area: s = √(2A / (3√3))
  • From perimeter: s = P / 6
  • From inradius: s = 2r / √3

The Hexagon Calculator handles all branches internally so you never need to rearrange formulas yourself.

Use Cases for Hexagon Calculator

The Hexagon Calculator is practical across many real-world domains:

  • Architecture & flooring — calculate the exact tile area needed for hexagonal floor or wall patterns, minimising material waste.
  • Beehive & honeycomb design — honeycomb cells are regular hexagons; use the Hexagon Calculator to size cells or estimate wax usage.
  • Game board design — hexagonal grids are common in board games and strategy maps; the Hexagon Calculator simplifies cell sizing.
  • Engineering & manufacturing — hex bolts and nuts have hexagonal cross-sections; compute wrench sizes or stock material area with the Hexagon Calculator.
  • Geometry education — students can verify hand calculations or explore how changing one property affects all others using the Hexagon Calculator.

Whether you are a student, designer, or engineer, the Hexagon Calculator provides instant, accurate answers for every regular hexagon problem.

Frequently asked questions about Hexagon Calculator

How does the Hexagon Calculator work?

Enter any one known value — side length, area, perimeter, circumscribed radius, or inscribed radius — and the Hexagon Calculator instantly derives all remaining properties of the regular hexagon.

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

The area formula is A = (3√3 / 2) × s², where s is the side length. The Hexagon Calculator applies this formula automatically.

What is the difference between the circumscribed and inscribed radius?

For a regular hexagon, the circumscribed radius R equals the side length s, while the inscribed radius r = (√3 / 2) × s. The Hexagon Calculator outputs both values.

Can I use the Hexagon Calculator to find the side length from the area?

Yes. Select 'Area' as the known value, enter the area, and the Hexagon Calculator will reverse-calculate the side length and all other parameters.

Is my data stored?

No. All calculations happen in your browser; nothing is sent to a server.