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Convert m to mm

Please provide values below to convert meter [m] to millimeter [mm], or vice versa.

From: meter
To: millimeter


Definition: A meter, or metre (symbol: m), is the base unit of length and distance in the International System of Units (SI). Currently, the meter is defined as the distance traveled by light in 1/299 792 458 of a second.

History/origin: Originally, in 1793, the meter was defined as one ten-millionth of the distance from the equator to the North Pole. This changed in 1889, when the International prototype metre was established as the length of a prototype meter bar (made of an alloy of 90% platinum and 10% iridium) measured at the melting point of ice. In 1960, the meter was again redefined, this time in terms of a certain number of wavelengths of a certain emission line of krypton-86. The current definition of the meter was adopted in 1983.

Current use: Being the SI unit of length, the meter is used worldwide in many applications such as measuring distance, height, length, width, etc. The United States is one notable exception in that it largely uses US customary units such as yards, inches, feet, and miles instead of meters in everyday use.

Possible future changes: The definition of some SI base units may change in the near future. The International Committee for Weights and Measures (CIPM) has proposed re-definition of some of the SI base units in an attempt to further improve the system. Although the definitions of some units may change, the actual size of the units would remain the same; the change in definition will not have much (if any) effect on the daily use of these units.

The meter is one of the units that is being considered for another re-definition. Currently it is based on the length of the path travelled by light in a vacuum during a specific time interval, noted above. If changed, the new definition of the meter will be based on defining the fixed numerical value of the speed of light in vacuum as 299,799,458, expressed in units of m·s-1, where the second is defined in terms of cesium frequency.


Definition: A millimeter (symbol: mm) is a unit of length in the International System of Units (SI). It is defined in terms of the meter, as 1/1000 of a meter, or the distance traveled by light in 1/299 792 458 000 of a second.

History/origin: The milli- prefix is one of many metric prefixes. It indicates one thousandth of the base unit, in this case the meter. The definition of the meter has changed over time, the current definition being based on the distance traveled by the speed of light in a given amount of time. The relationship between the meter and the millimeter is constant however. Prior to the current definition, the meter was based on the length of a prototype meter bar. As with all SI units, the definition of the meter is subject to change, and it is possible that a new definition of the meter will be in place in the future.

Meter to Millimeter Conversion Table

Meter [m]Millimeter [mm]
0.01 m10 mm
0.1 m100 mm
1 m1000 mm
2 m2000 mm
3 m3000 mm
5 m5000 mm
10 m10000 mm
20 m20000 mm
50 m50000 mm
100 m100000 mm
1000 m1000000 mm

How to Convert Meter to Millimeter

1 m = 1000 mm
1 mm = 0.001 m

Example: convert 15 m to mm:
15 m = 15 × 1000 mm = 15000 mm

Popular Length Unit Conversions

Convert Meter to Other Length Units

m to km
Meter to Decimeter
m to cm
Meter to Micrometer
Meter to Nanometer
meters to miles
meters to yards
meters to feet
meters to inches
Meter to Light Year
Meter to Break
Meter to Exameter
Meter to Petameter
Meter to Terameter
Meter to Gigameter
Meter to Megameter
Meter to Hectometer
Meter to Dekameter
Meter to Micron
Meter to Picometer
Meter to Femtometer
Meter to Attometer
Meter to Megaparsec
Meter to Kiloparsec
Meter to Parsec
Meter to Astronomical Unit
Meter to League
Meter to Nautical League (UK)
Meter to Nautical League (int.)
Meter to League (statute)
Meter to Nautical Mile (UK)
Meter to Nautical Mile (international)
Meter to Mile (statute)
Meter to Mile (US Survey)
Meter to Mile (Roman)
Meter to Kiloyard
Meter to Furlong
Meter to Furlong (US Survey)
Meter to Chain
Meter to Chain (US Survey)
Meter to Rope
Meter to Rod
Meter to Rod (US Survey)
Meter to Perch
Meter to Pole
Meter to Fathom
Meter to Fathom (US Survey)
Meter to Ell
Meter to Foot (US Survey)
Meter to Link
Meter to Link (US Survey)
Meter to Cubit (UK)
Meter to Hand
Meter to Span (cloth)
Meter to Finger (cloth)
Meter to Nail (cloth)
Meter to Inch (US Survey)
Meter to Barleycorn
Meter to Mil
Meter to Microinch
Meter to Angstrom
Meter to A.u. Of Length
Meter to X-unit
Meter to Fermi
Meter to Arpent
Meter to Pica
Meter to Point
Meter to Twip
Meter to Aln
Meter to Famn
Meter to Caliber
Meter to Centiinch
Meter to Ken
Meter to Russian Archin
Meter to Roman Actus
Meter to Vara De Tarea
Meter to Vara Conuquera
Meter to Vara Castellana
Meter to Cubit (Greek)
Meter to Long Reed
Meter to Reed
Meter to Long Cubit
Meter to Handbreadth
Meter to Fingerbreadth
Meter to Planck Length
Meter to Electron Radius (classical)
Meter to Bohr Radius
Meter to Earth's Equatorial Radius
Meter to Earth's Polar Radius
Meter to Earth's Distance From Sun
Meter to Sun's Radius