How to calculate cubic metres

Written by chris shore
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How to calculate cubic metres
It's easiest to get the dimensions for a cubic metre calculation with a metric ruler. (red measuring tape image by Dumitrescu Ciprian from

Finding cubic metres is the same thing as finding the volume of an item, measured in metres. Take a few measurements, do a simple calculation, and you have your answer. Just grab your metric ruler -- using one in inches and feet will work but requires different conversions.

Skill level:

Things you need

  • Metric ruler

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  1. 1

    Measure the height of your object.

  2. 2

    Measure the length.

  3. 3

    Measure the width.

  4. 4

    Convert measurements to metres if they are not already. If measurement was taken in millimetres, divide by 1,000. If by centimetres, divide by 100.

  5. 5

    Multiply the three measurements. The answer is given in cubic metres.

Tips and warnings

  • If all you have is a standard ruler, convert feet to metres by multiplying the measurement in feet by 0.3048.
  • If you are looking to put something in a cube, measure the inside height, length and width for an accurate answer.

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