Quadrilateral Calculator - Area and Perimeter

Your details

Select the type of quadrilateral. Each shape uses the optimal formula for that geometry.
The longer side of the rectangle or the base of the parallelogram.
units
The shorter side of the rectangle.
units
AreaRectangle
60units²

The total surface area enclosed by the quadrilateral

Perimeter32units
Diagonal 111.6619units
Diagonal 211.6619units
ShapeRectangle

Rectangle: area = 60.0000 units², perimeter = 32.0000 units.

  • Area: 60.0000 square units, Perimeter: 32.0000 units.
  • Both diagonals are equal at 11.6619 units, which is a property of rectangles and squares.
  • This shape uses 73.6% of the area a circle with the same perimeter would enclose. A square (the most efficient quadrilateral) achieves about 78.5%.
  • For a rectangle, increasing the side ratio toward 1:1 (a square) maximizes area for a given perimeter.

Next stepScale all measurements by the same factor k to scale area by k² and perimeter by k.

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