Parallelogram Perimeter Calculator

Find the perimeter of a parallelogram from its two side lengths.

Perimeter 26

Formula: perimeter = 2(a + b)

Step-by-step with your numbers:

1. Values used:

2. Side a = 8

3. Side b = 5

5. Perimeter = 26

Did we solve your problem today?

A parallelogram has two pairs of equal sides, so its perimeter is twice the sum of the two side lengths.

The math behind it

perimeter = 2(a + b), since opposite sides are equal.

Sides 8 and 5 → perimeter 26.

Do the angles affect the perimeter?

No — only the side lengths matter for perimeter.