Hexagon Calculator
Enter a side length below to instantly get the area and perimeter of a regular hexagon.
Area
41.5692
Perimeter
24
Regular Hexagon Formulas
Area = (3√3 / 2)s². Perimeter = 6s.
Worked example
A regular hexagon with side length 5.
Area = (3√3 / 2) × 5² = (3 × 1.732 / 2) × 25 ≈ 64.95
Perimeter = 6 × 5 = 30
Frequently Asked Questions
What is the formula for the area of a regular hexagon?
Area = (3√3 / 2) × s², where s is the side length. This comes from splitting the hexagon into 6 equilateral triangles.
What is the formula for the perimeter of a regular hexagon?
Perimeter = 6 × s, since a regular hexagon has six equal sides.
Does this work for irregular hexagons?
No — these formulas assume a regular hexagon, where all six sides and all six interior angles are equal. An irregular hexagon needs its own side-by-side breakdown, usually by splitting it into triangles.
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