The Diagonal of a Box calculator computes Box aka Parallelepiped the diagonal (D) of a box (a.k.a. rectangular parallelepiped) based on the length, height and depth (see diagram).
INSTRUCTIONS: Choose your preferred units and enter the following:
Diagonal: The diagonal (D) is returned in meters. However, this can be automatically converted into many other length units (e.g. feet, centimeters) via the pull-down menu.
` D = sqrt(l² + h² + d²)`