Template:Convert/list of units/length
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| Length | ||||||
|---|---|---|---|---|---|---|
| system | unit | code (alternative) |
abbreviation | notes | conversion factor/m | combinations |
| SI | gigametre | Gm | Gm | US spelling: gigameter |
1,000,000,000 | |
| megametre | Mm | Mm | US spelling: megameter |
1,000,000 | ||
| kilometre | km | km | US spelling: kilometer |
1,000 |
| |
| hectometre | hm | hm | US spelling: hectometer |
100 | ||
| decametre | dam | dam | US spelling: dekameter |
10 | ||
| metre | m | m | US spelling: meter |
1 |
| |
| decimetre | dm | dm | US spelling: decimeter |
0.1 | ||
| centimetre | cm | cm | US spelling: centimeter |
0.01 |
| |
| millimetre | mm | mm | US spelling: millimeter |
0.001 |
| |
| micrometre | μm (um, micrometre) |
µm | US spelling: micrometer |
0.000001 |
| |
| nanometre | nm | nm | US spelling: nanometer |
0.000000001 | ||
| non-SI metric | ångström | Å (angstrom) |
Å | 0.0000000001 | ||
| Imperial & US customary |
mile | mi | mi | 1,609.344 |
| |
| furlong | furlong | 201.168 | ||||
| chain | chain | 20.1168 | ||||
| rod | rd | rd | 5.0292 | |||
| pole | pole | equivalent to a rod | 5.0292 | |||
| perch | perch | equivalent to a rod | 5.0292 | |||
| fathom | fathom | assumes 1 fathom ≡ 6 ft | 1.8288 | |||
| yard | yd | yd | assumes the international definition | 0.9144 |
| |
| foot | ft (foot) | ft | Code "foot" will show "foot" if plural. | 0.3048 |
| |
| inch | in | in | 0.0254 |
| ||
| Maritime units | nautical mile | nmi | nmi | the international standard nautical mile | 1,852 | |
| nautical mile | oldUKnmi (admiralty nmi) |
nmi | 6080 ft the pre-1970 British nautical mile |
1,853.184 | ||
| Brnmi | (Brit) nmi | |||||
| admi | nmi (admiralty) | |||||
| nautical mile | oldUSnmi | nmi | 6080.2 ft the pre-1954 US nautical mile |
1,853.24496 | ||
| pre1954USnmi (pre1954usnmi) |
(pre-1954 US) nmi | |||||
| pre1954U.S.nmi (pre1954usnmi) |
(pre-1954 U.S.) nmi | |||||
| Other | gigaparsec | Gpc | Gpc | 3.0856775813057×1025 | ||
| megaparsec | Mpc | Mpc | 3.0856775814672×1022 | |||
| kiloparsec | kpc | kpc | 3.0856775814672×1019 | |||
| parsec | pc (parsec) | pc | 3.0856775814672×1016 | |||
| gigalight-year | Gly | Gly | 9.4607304725808×1024 | |||
| megalight-year | Mly | Mly | 9.4607304725808×1021 | |||
| kilolight-year | kly | kly | 9.4607304725808×1018 | |||
| light-year | ly | ly | 9.4607304725808×1015 | |||
| astronomical unit | AU | AU | 149,597,870,700 | |||