Rectangle Calculator

Rectangle Calculator - calculate the area, perimeter and diagonal of a rectangle. Online rectangle calculator to calculate the area, perimeter and diagonal given the length and width of the rectangle.

Rectangle Formula

Following is the rectangle formula on how to calculate rectangle area, perimeter and diagonal.

Area of Rectangle = l * w,
Perimeter of Rectangle = 2(l + w),
Diagonal of Rectangle = √l²+w², where
l = length of the rectangle
w = width of the rectangle