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Rectangle perimeter

Calculate Rectangle perimeter instantly with the exact formula and a worked example. Free online calculator — no signup.

Rectangle perimeter

Side am
Side bm
Rectangle perimeter
20m
Calculate Rectangle perimeter instantly with the exact formula and a worked example. Free online calculator — no signup.

More about: Rectangle perimeter

What it calculates

The “Rectangle perimeter” calculator computes Rectangle perimeter in m from 2 parameters: side a (m), side b (m).

A core calculation for studying, engineering tasks, and checking solutions.

Example calculation

With parameters Side a = 6 m, Side b = 4 m the result is 20 m.

How to use

  1. Enter the parameter values — every field above is adjustable with a slider.
  2. The result and related metrics are calculated automatically as you type.
  3. Use the additional metrics shown (if any) where needed.
  4. Copy the result or bookmark the page.

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