Decametre

Decametre
Unit system	metric
Unit of	length
Symbol	dam
Unit conversions
1 dam in ...	... is equal to ...

SI units	7001100000000000000♠10 m
imperial/US units	10.936 yd 393.70 in

Look up decametre in Wiktionary, the free dictionary.

A decametre or dekametre (American spelling: dekameter, earlier decameter; symbol dam, sometimes unofficially Dm or dkm) is a very rarely used unit of length in the metric system, equal to ten metres.

This measure is included in the SI mostly for completeness: in principle, any combination of prefix and unit can be written, but many are rarely used in practice. One practical use of the decameter is for altitude of geopotential heights in meteorology. Meteorologists also use another seldom encountered SI prefix: hecto- in hectopascal (hPa). The volumetric form (see below) cubic decametre is convenient for describing large volumes of water such as in rivers and lakes.

The square decametre (dam²) also known as the are (a), is the basis for the hectare (100 dam²), the standard metric unit of land registry.

SI units of length
From smallest to largest (left to right). Commonly used units shown in bold italics.
yoctometre (1×10⁻²⁴ m) zeptometre attometre femtometre picometre nanometre micrometre millimetre centimetre decimetre metre (m) decametre hectometre kilometre megametre gigametre terametre petametre exametre zettametre yottametre (1×10²⁴ m)

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Decametre

See also