›› Measurement unit: mm

Full name: millimetre

Plural form: millimetres

Symbol: mm

Alternate spelling: millimeters

Category type: length

Scale factor: 0.001

›› Similar units


›› SI unit: metre

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

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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: mm

mm to fist
mm to cape rood
mm to em
mm to lug
mm to moot [India]
mm to pie [Italian]
mm to li [imperial China]
mm to pygme [Greece]
mm to step
mm to link [Ramden, engineer]