Parallelogram Perimeter Calculator

Your details

Pick the mode that matches the measurements you have available.
Length of one pair of parallel sides.
cm
Length of the other pair of parallel sides.
cm
Perimeter
26cm

Total distance around the parallelogram (same unit as inputs)

Side a8cm
Side b5cm

Perimeter = 26.00 cm

  • Side a is 8.00 cm and side b is 5.00 cm, giving a perimeter of 26.00 cm.
  • Side b is 63% of side a. Increasing either side increases the perimeter by twice that amount.
  • Because opposite sides of a parallelogram are equal, the perimeter is always exactly 2(a + b), regardless of the interior angles.

Next stepNeed the area as well? Use a parallelogram area calculator with the base and perpendicular height (or base, side, and angle).

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