Cubic metre

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One cubic metre of concrete (representing the world annual production per inhabitant)

The cubic metre (symbol ) is the SI unit of volume. Since a "cube" is a shape formed by having the same length, breadth and height, a cubic metre refers to a unit of volume that is one metre in length, breadth and height (1m3). In other words, it is a cube with a length of one metre, with 1,000 litres of space.

In the United States it is spelled "cubic meter". Other names are stère and kilolitre, spelled kiloliter in the United States.

Conversions[change | change source]

1 cubic metre equals:

A cubic metre of pure water at the temperature of maximum density (3.98 °C) and standard atmospheric pressure (101.325 kPa) has a mass of 1000 kg, or one tonne. At 0 °C, the freezing point of water, it is slightly less, 999.972 kg.

It is sometimes abbreviated cu m, m3, m^3 or m**3 when superscript characters or markup are not available/accessible (i.e. in some typewritten documents and postings in Usenet newsgroups).

Abbreviated CBM in the freight business and MTQ (or numeric code 49) in international trade.

Multiples and submultiples[change | change source]

Multiples[change | change source]

Cubic decametre
the volume of a cube of side length one decametre (10 m)
equal to a megalitre
1 dam3 = 1,000 m3 = 1 ML
Cubic hectometre
the volume of a cube of side length one hectometre (100 m)
equal to a gigalitre
1 hm3 = 1,000,000 m3 = 1 GL
Cubic kilometre
the volume of a cube of side length one kilometre (1,000 m)
equal to a teralitre
1 km3 = 1,000,000,000 m3 = 1 TL

Submultiples[change | change source]

Cubic decimetre
the volume of a cube of side length one decimetre (0.1 m)
equal to a litre
1 dm3 = 0.001 m3 = 1 L
Cubic centimetre
the volume of a cube of side length one centimetre (0.01 m)
equal to a millilitre
1 cm3 = 0.000001 m3 = 10-6 m3 = 1 mL
Cubic millimetre
the volume of a cube of side length one millimetre (0.001 m)
equal to a microlitre
1 mm3 = 0.000000001 m3 = 10-9 m3 = 1 µL