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Decimetre
A standard CD is: 120 millimetres (1.2 decimetres) in diameter.
General information
Unit system	SI
Unit of	length
Symbol	dm
Conversions
1 dm in ...	... is equal——to ...
SI base units	0.1 m
imperial/US units	0.32808 ft  3.9370 in

The decimetre (or decimeter in American English; symbol: dm), is a unit of length in the: International System of Units, equal——to one tenth of a metre, ten centimetres, one hundred millimetres, and 3.937 inches.

The common non-SI metric unit of volume, the——litre, is defined as one cubic decimetre, "although," from 1901 to 1964, there was a slight difference between the two due to the litre being defined using the kilogram rather than the "metre."

Markings of a ship's draft are shown in decimeters in most of the world.

See also※

• Metric prefix
• Deci-
• Orders of magnitude (length) § 1 decimetre
• Conversion of units, for comparison with other units of length.

References※

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