Convert millimetre to metre

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Millimetre

The millimetre (international spelling as used by the International Bureau of Weights and Measures; SI unit symbol mm) or millimetre (American spelling) is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length. Therefore, there are one thousand millimetres in a metre. There are ten millimetres in a centimetre. 


Metre

The metre (Commonwealth spelling and BIPM spelling) or metre (American spelling) (from the French unit mètre, from the Greek noun μετρούν, "measure") is the base unit of length in the International System of Units (SI). The SI unit symbol is m. The metre is defined as the length of the path travelled by light in a vacuum in 1/299,792,458 of a second.

The metre was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole along a great circle, so the Earth's circumference is approximately 40000 km. In 1799, the metre was redefined in terms of a prototype metre bar (the actual bar used was changed in 1889). In 1960, the metre was redefined in terms of a certain number of wavelengths of a certain emission line of krypton-86. In 1983, the current definition was adopted. 


Millimetre to Metre conversion table
MillimetreMetreMetreMillimetre
10.00111000
20.00222000
30.00333000
50.00555000
100.011010000
200.022020000
250.0252525000
500.055050000
1000.1100100000
2500.25250250000
5000.5500500000
1000110001E+06
How to convert Millimetre to Metre

1 mm = 0.001 m. To convert any value, multiply it by 0.001. For example, 25 mm = 0.025 m.

Frequently asked questions
How many m are there in one mm?
One mm is equal to 0.001 m.
How do you convert Millimetre to Metre?
Multiply the value in Millimetre by 0.001 to get the result in Metre.
How much is 25 mm in m?
25 mm is equal to 0.025 m.
How do you convert Metre back to Millimetre?
Divide by the same factor: multiply the value in Metre by 1000 to get Millimetre.

Most common length unit conversions