The Diagonal of a Box calculator computes the length of diagonal of a box based on the vertical height, width and the length.
INSTRUCTIONS: Choose units and enter the following:
Diagonal (D): The calculator will return the length of the diagonal in inches. However, this can be automatically converted to other length units (e.g. centimeters, feet) via the pull-down menu.
The mathematical term for a box is a rectangular cuboid. The formula for the diagonal of a box is:
`D = sqrt(L^2 + W^2 + H^2)`