**cubic metre**

##### SI coherent derived unit

Name | Symbol | Derived quantity | ||

cubic metre | m^{3} |
volume | ||

## DefinitionThe cubic metre, symbol m |

### Volume

Volume is the quantity that expresses the size of a three-dimensional space.

### Capacity

The internal volume of a container, especially one intended to hold a liquid, is often described as the container’s capacity.

The metric system makes no distinction between the terms capacity and volume – all three-dimensional spaces are measured with the same units.

### Non-SI units of volume

The litre, symbol L or l, is a non-SI unit of volume, accepted for use with the SI. It is equal to one cubic decimetre, symbol dm^{3}.

SI prefixes can be used with the litre; one microlitre is equal to one cubic millimetre, and one millilitre is equal to one cubic centimetre.

### Orders of magnitude

1000 mm^{3} |
= 1 cm^{3} |
= 1000 µL | = 1 mL | = | 10^{-6} m^{3} |

1000 cm^{3} |
= 1 dm^{3} |
= 1000 mL | = 1 L | = | 10^{-3} m^{3} |

1000 dm^{3} |
= 1 m^{3} |
= 1000 L | = 1 kL | = | 10^{0} m^{3} |

1000 m^{3} |
= 1 dam^{3} |
= 1000 kL | = 1 ML | = | 10^{3} m^{3} |

1000 dam^{3} |
= 1 hm^{3} |
= 1000 ML | = 1 GL | = | 10^{6} m^{3} |

1000 hm^{3} |
= 1 km^{3} |
= 1000 GL | = 1 TL | = | 10^{9} m^{3} |

### Usage

Abreviations, such as cu.m. and CU.M., must not be used in place of the SI symbol m^{3}.