Hexagon Calculator
Enter any one measurement of a regular hexagon (side, area, perimeter, diagonals, circumradius or inradius) to find the rest.
Change the values and press Calculate to work out your own figures.
Enter any one measurement of the regular hexagon.
Show the working
- From the side (a): side a = 4
- Area = n a² ÷ (4 tan(180° ÷ n)) = 6 × 4² ÷ (4 tan(30°))
- Area (A) = 41.56921938
How to use it
Enter any one measurement of the regular hexagon.
Enter the measurements (decimals, fractions such as 3/4, or mixed numbers such as 1 1/2) and, if you like, their unit; the answer is then also given in other units. Show the working gives the formula.
Key facts
A = (3√3 ÷ 2) a²; long diagonal 2a; short diagonal √3 a
Six triangles
A regular hexagon is six equilateral triangles; its circumradius equals its side.
Questions
What is the area of a regular hexagon with side 4?
24√3 ≈ 41.56921938.
Each interior angle?
120°.
Formulas
A = (3√3 ÷ 2) a²; long diagonal 2a; short diagonal √3 a
Sources
Limitations
- All measurements in one calculation use the same unit; the answer is also given in other units.
- Measurements up to 10¹⁵.