Point 1: (x1,y1)

Point 2: (x2,y2)

Point 3: (x3,y3)

Point 4: (x4,y4)


How does the Quadrilateral Calculator work?
Free Quadrilateral Calculator - Given 4 points entered, this determines the area using Brahmaguptas Formula and perimeter of the quadrilateral formed by the points as well as checking to see if the quadrilateral (quadrangle) is a parallelogram.
This calculator has 4 inputs.

What 3 formulas are used for the Quadrilateral Calculator?

Perimeter of ABCD = AB + BC + CD +AD

s = ½P
A = √(s - a)(s - b)(s - c)(s - d)

For more math formulas, check out our Formula Dossier
What 3 concepts are covered in the Quadrilateral Calculator?
simple quadrilateral with two pairs of parallel sides.
The distance around a shape or object
Polygon with 4 edges/sides and 4 corners/vertices
Example calculations for the Quadrilateral Calculator

Quadrilateral Calculator Video

Quadrilateral Calculator Video