Cubic metre

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

The cubic metre (US spelling: cubic meter, symbol: m³) is the SI derived unit of volume. It is the volume of a cube with edges one metre in length. An alternative name, which allowed a different usage with metric prefixes, was the stère. Another alternative name, not widely used any more, is the kilolitre.

[edit] Conversions

Main article: Unit conversion

1 cubic metre is equivalent to:

1,000 litres (exactly);^[1]
~35.3 cubic feet (approximately)
- 1 cu ft = 0.028316846592 m³ (exactly)
~1.31 cubic yards (approximately)
- 1 cu yd = 0.764554857984 m³ (exactly)
~6.29 oil barrels (approximately)
- 1 oil bbl = 0.158987294928 m³ (exactly)

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 kilograms.

It is sometimes abbreviated to 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.

[edit] Multiples and submultiples

Main article: SI prefix

See 1 E-3 m³ for a comparison with other volumes.

[edit] Multiples

Cubic decameter: 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

[edit] Submultiples

Cubic decimeter: 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^[2]: the volume of a cube of side length one centimetre (0.01 m); equal to a millilitre; 1 cm³ = 0.000001 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 = 1 µL

[edit] Notes

^ From 1901 to 1964 the litre was defined as the volume of one kilogram of pure water at 4°C and 760 millimetres of mercury pressure. During this time, a litre was about 1.000028 dm³. In 1964 the original definition was reverted to.
^ The cubic centimetre is the base unit of volume of the CGS system of units. The colloquial abbreviations "cc" and "ccm" are not SI but are common in some contexts such as cooking, engine displacement and medicine.

SI derived unit cubic metre, from base unit metre				Orders of magnitude for volume				Conversion of units for volume
1 E-36 m³ = 1 pm³	1 E-27 m³ = 1 nm³	1 E-18 m³ = 1 µm³	1 E-9 m³ = 1 mm³			1 E0 m³ = 1 m³			1 E+9 m³ = 1 km³	1 E+18 m³ = 1 Mm³	1 E+27 m³ = 1 Gm³
10 pm³	10 nm³	10 µm³	10 mm³			10 m³			10 km³	10 Mm³	10 Gm³
100 pm³	100 nm³	100 µm³	100 mm³			100 m³			100 km³	100 Mm³	100 Gm³
1,000 pm³	1,000 nm³	1,000 µm³	1,000 mm³	=	1 cm³	1,000 m³	=	1 dam³	1,000 km³	1,000 Mm³	1,000 Gm³
10,000 pm³	10,000 nm³	10,000 µm³	10,000 mm³	=	10 cm³	10,000 m³	=	10 dam³	10,000 km³	10,000 Mm³	10,000 Gm³
100,000 pm³	100,000 nm³	100,000 µm³	100,000 mm³	=	100 cm³	100,000 m³	=	100 dam³	100,000 km³	100,000 Mm³
1,000,000 pm³	1,000,000 nm³	1,000,000 µm³	1,000,000 mm³	=	1 dm³	1,000,000 m³	=	1 hm³	1,000,000 km³	1,000,000 Mm³	1 E+40 m³
10,000,000 pm³	10,000,000 nm³	10,000,000 µm³	10,000,000 mm³	=	10 dm³	10,000,000 m³	=	10 hm³	10,000,000 km³	10,000,000 Mm³	1 E+50 m³
100,000,000 pm³	100,000,000 nm³	100,000,000 µm³	100,000,000 mm³	=	100 dm³	100,000,000 m³	=	100 hm³	100,000,000 km³	100,000,000 Mm³	1 E+80 m³
1 E-6 m³ = 1 cm³ = 1 mL • 1 E-5 m³ = 10 cm³ = 1 cL • 1 E-4 m³ = 100 cm³ = 1 dL • 1 E-3 m³ = 1 dm³ = 1 L ; • 1 E-2 m³ = 10 dm³ = 1 daL • 1 E-1 m³ = 100 dm³ = 1 hL • 1 E0 m³ = 1 m³ = 1 kL

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[0] From 1901 to 1964 the litre was defined as the volume of one kilogram of pure water at 4°C and 760 millimetres of mercury pressure. During this time, a litre was about 1.000028 dm³. In 1964 the original definition was reverted to.

[1] The cubic centimetre is the base unit of volume of the CGS system of units. The colloquial abbreviations "cc" and "ccm" are not SI but are common in some contexts such as cooking, engine displacement and medicine.

[1]

[2]

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