Perimeter Calculator
Calculate the perimeter or circumference of various geometric shapes
How to use: Select a shape, enter the required measurements, and the perimeter will be calculated automatically. All measurements should be in the same unit.
Square
Calculate the perimeter of a square
Formula: Perimeter = 4 × side
Examples
Square (side = 5): Perimeter = 20 units
Rectangle (length = 10, width = 5): Perimeter = 30 units
Circle (radius = 3): Circumference ≈ 18.85 units
Triangle (sides = 3, 4, 5): Perimeter = 12 units
Parallelogram (side1 = 8, side2 = 5): Perimeter = 26 units
Hexagon (6 sides, side = 4): Perimeter = 24 units