Volume of a Prism Calculator

Use this calculator to easily calculate the volume of a triangular prism or tank from its length, base, and height in any metric: mm, cm, meters, km, inches, feet, yards, miles...

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Prism volume 30 cm3
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Volume of a triangular prism formula

The volume formula for a triangular prism is (height x base x length) / 2, as seen in the figure below:

volume triangular prism

So, you need to know just three lengths: height, base, and length, in order to calculate the volume.

How to calculate the volume of a triangular prism?

You need to take or know (from a plan/schematic) three length measurements. Make sure they are all in the same length unit, or convert accordingly until they are. The result from the calculation using our volume of a triangular prism calculator is always in cubic units: in3, ft3, yd3, mm3, cm3, meters3, etc.

The math is fairly simple, so it can be done using an ordinary calculator as well as by hand, but it can be difficult with large numbers or numbers with fractions.

Practical applications

A lot of classical roofs have the shape of a triangular prism, so calculating the volume of air below it might be useful if you are using the space as a living area. This type of roof has the best distribution of forces generated by the weight of the roofing and lateral forces (i.e. wind). Many campign tents are also such prisms, making use of the same beneficial properties.

Cite this calculator & page

If you'd like to cite this online calculator resource and information as provided on the page, you can use the following citation:
Georgiev G.Z., "Volume of a Triangular Prism Calculator", [online] Available at: https://www.gigacalculator.com/calculators/volume-of-triangular-prism-calculator.php URL [Accessed Date: 07 Apr, 2020].