millimetre mm
1/1000 of a metre. Standard for small machined parts and rainfall.
Quick convert — millimetre to popular units
Live converter, three directions. Type any value to update all three.
millimetre
metre
1 mm = 0.001m
millimetre
kilometre
1 mm = 1.00e-6km
millimetre
centimetre
1 mm = 0.1cm
Conversion table — millimetre to every Length unit
All values for 1 mm (forward) and 1 reverse unit → {symbol}.
| To / From | 1 mm = | 1 to-unit = |
|---|---|---|
| metre (m) | 0.001 m | 1,000 mm |
| kilometre (km) | 1.000000e-6 km | 1,000,000 mm |
| centimetre (cm) | 0.1 cm | 10 mm |
| micrometre (μm) | 1,000 μm | 0.001 mm |
| nanometre (nm) | 1,000,000 nm | 1.000000e-6 mm |
| mile (mi) | 6.213712e-7 mi | 1,609,344 mm |
| yard (yd) | 0.00109361 yd | 914.4 mm |
| foot (ft) | 0.00328084 ft | 304.8 mm |
| inch (in) | 0.03937008 in | 25.4 mm |
| nautical mile (nmi) | 5.399568e-7 nmi | 1,852,000 mm |
| light-year (ly) | 1.057001e-19 ly | 9.460730e+18 mm |
| ångström (Å) | 10,000,000 Å | 1.000000e-7 mm |
Frequently Asked Questions
What does mm stand for?
millimetre (mm) is a unit of Length.
How many mm are in 1 m?
1 m = 0.001 mm, so 1 mm = 1,000 m.
Is this the SI base unit?
No. millimetre is one of several units in the Length category. The SI base is m.
Common conversions from millimetre
#1
millimetre (mm) → meter (m)
Convert millimetre (mm) to meter.
#2millimetre (mm) → kilometer (km)
Convert millimetre (mm) to kilometer.
#3millimetre (mm) → centimeter (cm)
Convert millimetre (mm) to centimeter.
#4millimetre (mm) → micrometer (μm)
Convert millimetre (mm) to micrometer.
#5millimetre (mm) → nanometer (nm)
Convert millimetre (mm) to nanometer.
#6millimetre (mm) → mile (mi)
Convert millimetre (mm) to mile.
#7millimetre (mm) → yard (yd)
Convert millimetre (mm) to yard.
#8millimetre (mm) → foot (ft)
Convert millimetre (mm) to foot.