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Regular hexagon

To the mobile version
side length a
long diagonal d1 = 2 ⋅ a
short diagonal d2 = √(3) ⋅ a
area A = 3/2√(3) ⋅ a²
perimeter u = 6 ⋅ a
circumradius r1 = a
inradius r2 = 1/2√(3) ⋅ a

Rounding: significant digits.
Decimal sign:

This is a calculator for lengths and the area of a regular hexagon. All sides have the same length and the angles measure 120° each.


Usage: Type a known value of the hexagon into the respective field. Click on any free space of the window or on the "calculate"-button and read the result. Use the "reset" button to delete your calculation. The units change in correspondance to the input values (cm and cm² or m and m² etc.).

Example: A regular hexagon has a perimeter of 15 cm. How big is the area of this shape? Type "15" into the field for the perimeter. Click on any free space of the window or on the "calculate"-button. Read the result for the area (16.238 cm²).

- Please note the remarks about the representation of numbers..
- There is no warranty for the calculation. Cactus2000 is not responsible for damage of any kind caused by wrong results.
- Please send an email if you have suggestions or if you would like to see more conversions to be included.

© Bernd Krüger, 23.01.2020

Bernd Krüger, 2022