How to Convert Mm3 to M3

Written by lisa porter
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Mm3 or mm^3 stands for cubic millimetres, and M3 or m^3 stands for cubic meters. Cubic millimetres and cubic meters are metric volume measurements. One meter equals 1,000 millimetres, and so 1 cubic meter equals 1,000 millimetres cubed, or 1,000,000,000 cubic millimetres. If you have a large cubic millimetre measurement, it might be easier to work with the number if you convert it to cubic meters. You can convert a cubic millimetre measurement to a cubic meter measurement using a calculator or a free online unit converter.

Skill level:

Things you need

  • Calculator
  • Online unit converter

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  1. 1

    Turn on the calculator.

  2. 2

    Enter the cubic millimetre value.

  3. 3

    Divide by 1,000,000,000. The new value is the cubic meter value.

  1. 1

    Go to an online unit conversion calculator. Look at or, or follow the Resource links.

  2. 2

    Enter the cubic millimetre value and click “convert” or “calculate.”

  3. 3

    Find the cubic meter value in the second column or box.

Tips and warnings

  • You might find cubic millimetre values written in scientific notation. For example, 1 cubic meter equals 1x 10^9, or 1,000,000,000.

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