The Diagonal of a Squared calculator Rectanglecomputes the length of the diagonal of a rectangle.
INSTRUCTIONS: Choose your preferred length units and enter the following:
Diagonal Length (c): The calculator returns the length of the diagonal (c) in feet. However, this can be automatically converted to other length units (e.g. centimeters) via the pull-down menu.
A rectangle is a four sided polygon (quadrilateral) with four squared corners (90o). The diagonal is computed using the Pythagorean formula.