# Diagonal of a Cuboid Calculator

Find the Cuboid diagonal using this online diagonal of a cuboid calculator with the known values of length, width and height.

Find the Cuboid diagonal using this online diagonal of a cuboid calculator with the known values of length, width and height.

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#### Formula:

Diagonal of a Cuboid = √(l^{2} + w^{2} + h^{2})
**Where,**
l = Length
w = Width
h = Height
A rectangular cuboid has a shape of a rectangular box, which is also called as a right rectangular prism. (length, width, height).

#### Example

**A rectangular cuboid with length, width and height as 5cm, 3cm and 7cm has a diagonal of **

=√(5^{2}+3^{2}+7^{2})

= 9.110 cm.