Volume of a Rectangular Prism Calculator

Created by Hanna Pamuła, PhD candidate
Reviewed by Bogna Szyk and Jack Bowater
Last updated: May 18, 2022
Any prism (square, triangular, etc), including a cylinder, has a volume found by its end area multiplied by its length.
Hanna Pamuła, PhD candidate
Volume of a box
Length (l)
Width (w)
Height (h)
Rectangular prism volume
cu in
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Area of a rectangle

This calc gives some properties of rectangles. For a square, set both sides to be the same length.

Triangle area

The three angles of a triangle are calculated from side lengths by cutting it into two right-angled triangles and solving Pythagoras' theorem for each one. These simultaneous equations give the upright length, thus the angles can be found by trigonometry, and the area follows.
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