Easily find the perimeter of any four-sided polygon – a quadrilateral – with our free online calculator. Just enter the lengths of its four sides (a, b, c, and d) to get instant, accurate results. Perfect for geometry students, architects, and engineers, this tool handles squares, rectangles, rhombuses, and trapezoids with ease.
Formula:
The formula to calculate the perimeter (P) of any quadrilateral is simply the sum of the lengths of its four sides:
P = a + b + c + d
Where:
- P = Perimeter of the quadrilateral
- a = Length of the first side
- b = Length of the second side
- c = Length of the third side
- d = Length of the fourth side