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Definition: The length of 1 meter is a SI unit.
The sign is m and the symbol is l.
Inches and centimeters in comparison
Conversions of other length units
1 kilometer ( km ) = 1000 meters, 1 meters = 100 cm, 1 cm = 10 mm,
1 mile = 5280 feet, 1 yard ( yd ) = 3 feet (ft), 1 fathom = 6 feet, 1 chain (ch) = 66 feet
| Unit Name | Symbol | SI Equivalent m |
| atomic unit of length | a.u., a 0, b | 5.29177×10-11 m |
| angstrom | Å | 1×10-10 m |
| arcmin | arcmin | 2.90888×10-4 m |
| astronomical unit | AU, UA | 1.4959787066×1011 m |
| attometer | am | 1×10-18 m |
| barleycorn (UK) | 1/3 inch | 8.46666667×10-3 m |
| bohr (first Bohr radius) | a 0 , b | 5.2917725×10-11 m |
| bolt (US cloth) | 36.576 m | |
| button (UK) | line (UK) | 2.11667×10-3 m |
| button (US) | line (US) | 6.35×10-4 m |
| cable length (int.) | 185.2 m | |
| cable length (UK) | 185.318 m | |
| cable length (US) | 219.456 m | |
| caliber (centiinch) | caliber, cin | 2.54×10-4 m |
| centimeter | cm | 1×10-2 m |
| chain (engineer's) | ch | 30.48 m |
| chain (Gunter's) | ch | 20.1168402337 m |
| chain (Ramsden's) | ch | 30.48 m |
| chain (surveyor's) | ch | 20.1168 m |
| cubit (UK) | 0.4572 m | |
| decameter | dam | 10 m |
| decimeter | dm | 0.1 m |
| electron classical radius | r e | 2.81794×10-15 m |
| ell | 1.143 m | |
| ems (pica) | 4.2175×10-3 m | |
| e·ameter | Em | 1×1018 m |
| fathom = 2 yd | fath | 1.8288 m |
| femtometer | fm | 1×10-15 m |
| fermi | F, f | 1×10-15 m |
| first Bohr radius | a 0 , b , a.u. | 5.29177×10-11 m |
| foot | ft | 0.3048 m |
| French | fr | 3.33333×10-4 m |
| furlong (UK) | fur | 201.168 m |
| furlong (US) | fur | 201.168 m |
| gigameter | Gm | 1×109 m |
| hand (UK) | hd | 0.1016 m |
| hectometer | hm | 100 m |
| hubble | 9.46053×1024 m | |
| inch | in | 2.54×10-2 m |
| kilometer | km | 1000 m |
| kiloparsec | kpc | 3.08568×1019 m |
| league (Canadian) | 4827 m | |
| league (int. naut.) | leag. (int. naut.) | 5556 m |
| league (statute, land) | leag. (stat.) | 4828.03 m |
| league (UK, naut.) | leag. (UK, naut.) | 5559.55 m |
| league (US, naut.) | leag. (US, naut.) | 5559.55 m |
| light-day | 2.59021×1013 m | |
| light-hour | 1.07925×1012 m | |
| light-minute | 1.79875×1010 m | |
| light-second | 2.99792458×108 m | |
| light-year | ly | 9.460730473×1015 m |
| line (UK) | ine (UK) | 2.11667×10-3 m |
| line (US) | line (US) | 6.35×10-4 m |
| link (engineer's) | 0.3048 m | |
| link (Gunter's) | 0.201168 m | |
| link (Ramsden's) | 0.3048 m | |
| link (surveyor's) | 0.201168 m | |
| megameter | Mm | 1×106 m |
| meter | m | 1 m |
| microinch | µin | 2.54×10-8 m |
| micron = micometer | µm | 1×10-6 m |
| mil (thou) | mil, thou | 2.54×10-5 m |
| mile (geographical) | mile (geogr.) | 7421.59 m |
| mile (international) | mi (int.) | 1609.35 m |
| mile (nautical, international) | mi (naut., int.) | 1852 m |
| mile (nautical, telegraph) | mi (naut., teleg.) | 1855.32 m |
| mile (nautical, UK, US) | mi (naut., UK, US) | 1853.18 m |
| mile (statute, land) | mi (stat.) | 1609.344 m |
| mile (survey, US) | mi (survey, US) | 1609.35 m |
| millimeter | mm | 1×10-3 m |
| millimicron | mµ, nm | 1×10-9 m |
| nail (UK) | 1/16 yd | 0.05715 m |
| nanometer | nm | 1×10-9 m |
| nautical mile (international) | mi (int. naut.) | 1852 m |
| nautical mile (UK, US) | mi (UK, US, naut.) | 1853.18 m |
| pace (UK) | = 30 inches | 0.7620 m |
| palm (UK) | = 3 inches | 7.620×10-2 m |
| parsec | pc | 3.08568025×1016 m |
| perch (rod, pole) | rd | 5.0292 m |
| petameter | Pm | 1×1015 m |
| pica | 4.21752×10-3 m | |
| picometer | pm | 1×10-12 m |
| point (US printer's) | 3.5146×10-4 m | |
| pole (rod, perch) | rd | 5.0292 m |
| quadrant | 1×107 m | |
| rod (perch, pole) | rd | 5.02921005842 m |
| rope (UK) | 6.096 m | |
| span | 0.2286 m | |
| terameter | Tm | 1×1012 m |
| thou (mil) | thou, mil | 2.54×10-5 m |
| X-unit | UX, X | 1.002077×10-13 m |
| yard | yd | 0.9144 m |
| yoctometer | ym | 1×10-24 m |
| yottameter | Ym | 1×1024 m |
| zeptometer | zm | 1×10-21 m |
| zettameter | Zm | 1×1021 m |
| The international inch is defined in terms of the metric (!) system of units to be exactly (!) 25.4 mm. This definition was agreed upon by the U.S. and the British Commonwealth in 1958. Prior to that, the U.S. and Canada each had their own, slightly different definition of the inch in terms of metric units, while the U.K. and other Commonwealth countries defined the inch in terms of the Imperial Standard Yard. The U.S. continued to use its previous national definition of the inch for surveying purposes. This inch, known as the U.S. survey inch is defined so that 1 metre is exactly 39.37 survey inches. 1 survey inch equals approximately 25.40000508 mm, or 1.000002 international inches. |
