millimeters (mm)

millimeters as a conversion hub: 8 direct pairs, all with the exact factor on the page.

Definition1 mm = 0.001 m exactly

CategoryLength Converter

Pairs from here8

Length Converter

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millimeters converted to every other unit

mm	cm	m	km	in	ft	yd	mi	nmi
1 mm	0.1	0.001	0.000001	0.03937008	0.0032808399	0.0010936133	0.0000006214	0.00000054
2 mm	0.2	0.002	0.000002	0.07874016	0.0065616798	0.0021872266	0.0000012427	0.0000010799
5 mm	0.5	0.005	0.000005	0.19685039	0.0164042	0.0054680665	0.0000031069	0.0000026998
10 mm	1	0.01	0.00001	0.39370079	0.0328084	0.01093613	0.0000062137	0.0000053996
20 mm	2	0.02	0.00002	0.78740157	0.0656168	0.02187227	0.0000124274	0.0000107991
50 mm	5	0.05	0.00005	1.968504	0.16404199	0.05468066	0.0000310686	0.0000269978
100 mm	10	0.1	0.0001	3.937008	0.32808399	0.10936133	0.0000621371	0.0000539957

All conversions starting from mm

mm to cm mm to m mm to km mm to in mm to ft mm to yd mm to mi mm to nmi

Questions

How do I convert from millimeters?

Pick the target unit from the table on this page, or open the dedicated pair page — each one carries a converter, a table of common values and the exact factor.

Is millimeter exact or approximate?

The factor shown (1 mm = 0.001 m) is fixed by definition, so conversions are exact rather than measured.

What is millimeter used for?

millimeters as used in practical measurements