Decametre | |
---|---|

Unit system | metric |

Unit of | length |

Symbol | dam |

Conversions | |

1 dam in ... | ... is equal to ... |

SI units | 10 m |

imperial/US units | 10.936 yd 393.70 in |

Look up in Wiktionary, the free dictionary.decametre |

A **decametre** (International spelling as used by the International Bureau of Weights and Measures^{[1]}^{[2]}), with American spelling **dekameter** or **decameter**,^{[3]}^{[4]}), symbol **dam** ("da" for the SI prefix deca-,^{[1]} "m" for the SI unit metre), is a unit of length in the International (metric) System of Units equal to ten metres.

While any combination of SI prefix and unit can be used, many are rarely used in practice; the decametre is used less frequently than other units of length. One practical use is for altitude of geopotential heights in meteorology. The volumetric form *cubic decametre* is convenient for describing large volumes of water such as in rivers and lakes^{[citation needed]}; a volume of one cubic decametre (dam^{3}) is equivalent to a capacity of one megalitre (ML).

One technical atmosphere is the pressure of one decameter of water.

## See also

- Orders of magnitude (length)
- Conversion of units, for comparison with other units

## References

- ^
^{a}^{b}*Decimal multiples and submultiples of SI units*, 2006, SI Brochure: The International System of Units (SI), 8th edition **^***Unit of length (metre)*, 2006, SI Brochure: The International System of Units (SI), 8th edition**^***The Two Classes of SI Units and the SI Prefixes*, 2008, The NIST Guide for the Use of the International System of Units**^**"Decametre definition and meaning".*Collins Dictionary*. Retrieved 27 July 2020.