Millimetre
From Wikipedia, the free encyclopedia
| International units | |
|---|---|
| 1×10−3 m | 1×10−6 km |
| 1 mm | 10×106 Å |
| 6.685×10−15 AU | 105.7×10−21 ly |
| US customary / Imperial units | |
| 39.37×10−3 in | 3.281×10−3 ft |
| 1.094×10−3 yd | 621.371×10−9 mi |
A millimetre (American spelling: millimeter, symbol mm) is a unit of length in the metric system, equal to one thousand of a metre, which is the current SI base unit of length. It can be written in scientific notations as 1×10−3 m (engineering notation) or 1 E-3 m (exponential notation) — both meaning 1 m / 1,000.
nanometre <<< micrometre <<< millimetre < centimetre < decimetre < metre < decametre < hectometre < kilometre
The corresponding unit of area is the square millimetre and the corresponding unit of volume is the cubic millimetre.
[edit] Unicode symbols
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.
[edit] See also
- 1 E-3 m
- SI
- SI prefix
- Metric system
- Orders of magnitude (length)
- Conversion of units, for comparison with other units of length
