Millimetre
For other uses, see MM.
| SI units | |
|---|---|
| 1×10−3 m | 0.1 cm |
| US customary / Imperial units | |
| 3.2808×10−3 ft | 39.370×10−3 in |
The millimetre (American spelling: millimeter, symbol mm) is a unit of length in the metric system, equal to one thousandth of a metre, which is the current SI base unit of length.
For the purposes of compatibility with Chinese, Japanese and Korean (CJK) characters, Unicode has symbols for:
- millimetre (㎜) - code 339C
- square millimetre (㎟) - code 339F
- cubic millimetre (㎣) - code 33A3
They are useful only with East Asian fixed-width CJK fonts, because they are equal in size to one Chinese character.
- 1 E-3 m
- SI
- SI prefix
- Metric system
- Orders of magnitude (length)
- Conversion of units, for comparison with other units of length
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