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Rectangular Prism Calculator

A Rectangular Prism is a three dimensional shape with six faces. All angles are right angles.

The faces consist of two equal ends, two equal sides and an equal top and bottom

(Note - in the calculator below only the top is refered to, but the bottom is included in the calculations)

Calculations can be saved to a table by clicking the "Add to Table" button he first time the button is clicked)

There is also the option to create a PDF document

Rectangular Prism Calculator

Rectangular Prism Calculator: This image shows a rectangular prism with associated calculations used by the rectangular prism Calculator

Dimensions Value Comments
Height (h) mm Vertical height
Width (w) mm Horizontal width, also known as the depth
Length (l) mm Overall length
Diagonal lengths Value Comments
End Diagonal mm Length from top corner of one end to the bottom corner of the same end
Side Diagonal mm Length from top corner of one side to the bottom corner of the same side
Top Diagonal mm Length from one top corner to the opposite top corner
Internal Diagonal mm Length from top corner of one end to the bottom corner of the other end. Also known as space diagonal
Surface Area and Volume Value Comments
End Surface Area mm2 Surface area of one end
Side Surface Area mm2 Surface area of one side
Top Surface Area mm2 Surface area of the top
Total Surface Area mm2 total surface area
Volume mm3 Total volume of the rectangular prism

You can refine the calculations by controlling the number of decimal places that the calculator calculates to. The default is 2 decimal places.

This calculator includes the following algorithms:

End surface area = h x w

Side surface area = h x l

Top surface area = w x l

Total surface area = 2 x ((h x w) + (h x l) + (w x l))

Volume = h x w x l

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