›› Measurement unit: millimetre

Full name: millimetre

Plural form: millimetres

Symbol: mm

Alternate spelling: millimeters

Category type: length

Scale factor: 0.001


›› SI unit: metre

The SI base unit for length is the metre.
1 metre is equal to 1000 millimetre.


›› Convert millimetre to another unit

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›› Definition: Millimeter

A millimetre (American spelling: millimeter, symbol mm) is one thousandth of a metre, which is the International System of Units (SI) base unit of length. The millimetre is part of a metric system. A corresponding unit of area is the square millimetre and a corresponding unit of volume is the cubic millimetre.


›› Sample conversions: millimetre

millimetre to hectometre
millimetre to light day
millimetre to chain [Gunter, survey]
millimetre to pole
millimetre to hair's breadth
millimetre to foot [Rome]
millimetre to gigametre
millimetre to tu
millimetre to agate [typographical]
millimetre to finger