everydaycalc
DIY & home

Room volume Calculator

Use the free room volume calculator. Enter length (m), width (m), height (m) to get a result, with a formula and worked example.

How to calculate room volume

This tool calculates room volume from Length (m), Width (m), Height (m). Enter each quantity in its labelled field, then use the formula below to check the calculation.

Formula

length × width × height

Worked example

Length (m)
4
Width (m)
5
Height (m)
2.4

Applying the formula to these values gives 48 m³.

What should I check?

Plan paint, tiles, flooring, concrete, gravel and soil quantities. Check the units shown on each field and add an appropriate allowance for your project.

Use the reset button to restore this example. Your inputs are processed in this browser and are not included in a shared calculator link. See our methodology and limitations.

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