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Perimeter Calculator

Total length of boundary.

Calculators for specific shapes (Triangle, Square, Circle, etc.) include Area & Perimeter results automatically. Please choose a shape calculator.

How to use Perimeter Calculator

  1. Select Shape: Choose the figure you are measuring.
  2. Input Sides: Enter the specific lengths required.
  3. Result: See the total perimeter length.

About Perimeter Calculator

The Perimeter Calculator finds the total distance around the outside of a 2D shape. It's like measuring the fence needed to enclose a yard.

Supports common shapes like Triangle, Rectangle, Circle (Circumference), and regular Polygons (Pentagon, Hexagon, etc.).