Rectangle Perimeter Calculator
Compute the perimeter of a rectangle: P = 2 × (length + width).
Calculator
Rectangle Perimeter Calculator
Result
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Formula
P = 2 × (length + width)
Step-by-step
- 1
Enter length and width
Both must be positive.
- 2
Read the perimeter
Distance all the way around.
Worked example
Example input: a: 8, b: 3
Result: 22
Related tools
- Rectangle Area
l × w.