# Cubic metre

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The **cubic metre** (in British English and international spelling as used by the International Bureau of Weights and Measures) or **cubic meter** (in American English) is the SI derived unit of volume.^{[1]} Its SI symbol is **m ^{3}**.

^{[1]}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, still sometimes used for dry measure (for instance, in reference to wood). Another alternative name, no longer widely used, was the kilolitre.

## Conversions

1 cubic metre = 1000litres (exactly) ^{[2]}^{[3]}≈ 35.3 cubic feet ≈ 1.31 cubic yards ≈ 6.29 oil barrels ≈ 220 imperial gallons ≈ 264 US fluid gallons

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 kg, or one 1000tonne. At 0 °C, the freezing point of water, a cubic metre of water has slightly less mass, 999.972 kilograms.

It is sometimes abbreviated to ** cu m**,

**,**

`m3`**,**

`M3`**,**

`m^3`**,**

`m**3`**,**

`CBM`**when superscript characters or markup cannot be used (e.g. in some typewritten documents and postings in Usenet newsgroups).**

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

## Multiples and submultiples

See Orders of magnitude (one cubic millimetre to one cubic metre) for a comparison with other volumes.

### Multiples

- Cubic decametre
- the volume of a cube of side length one decametre (10 m)
- equal to a megalitre
- 1 dam
^{3}= m^{3}= 1 1000 ML

- Cubic hectometre
- the volume of a cube of side length one hectometre (100 m)
- equal to a gigalitre
- in civil engineering abbreviated MCM for million cubic metres
- 1 hm
^{3}= 000000 m^{3}= 1 1 GL

- Cubic kilometre
- the volume of a cube of side length one kilometre ( m) 1000
- equal to a teralitre
- 1 km
^{3}= 000000000 m^{3}= 1 1 TL (810713.19 acre-feet; 0.239913 cubic miles)

### Submultiples

- Cubic decimetre also known as DCM in Rubber compound processing (Deci Cubic Meter).
- the volume of a cube of side length one decimetre (0.1 m)
- equal to a litre
- 1 dm
^{3}= 0.001 m^{3}= 1 L

- Cubic centimetre
^{[4]} - the volume of a cube of side length one centimetre (0.01 m)
- equal to a millilitre
- 1 cm
^{3}= 001 m^{3}= 10 0.000^{−6}m^{3}= 1 mL

- Cubic millimetre
- the volume of a cube of side length one millimetre (0.001 m)
- equal to a microlitre
- 1 mm
^{3}= 000001 m^{3}= 10 0.000^{−9}m^{3}= 1 µL

## Notes

- 1 2 Bureau International de Poids et Mesures. "Derived units expressed in terms of base units". 2014. Accessed 7 August 2014.
- ↑ 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 028 dm
^{3}. In 1964 the original definition was reverted to. 1.000 - ↑ "Archived copy". Archived from the original on 2009-10-01. Retrieved 2010-03-05.
- ↑ 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.