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Millimeters to meters

1 millimeter = 0.001 meters

Type a value in millimeters (mm) to get meters (m) straight away. A millimeter is smaller than a meter, so the number goes down. Both units belong to length, measured here against the meter.

1 mm = 0.001 m

Formula

m = mm × 0.001

One millimeter is 0.001 meters, so multiply by that factor. You can also divide by 1,000, the number of millimeters in one meter. Here mm is the value in millimeters and m is the result in meters.

Worked example: 250 millimeters × 0.001 = 0.25 meters.

Millimeters to meters table

millimeters (mm)meters (m)
1 mm0.001 m
2 mm0.002 m
3 mm0.003 m
4 mm0.004 m
5 mm0.005 m
6 mm0.006 m
7 mm0.007 m
8 mm0.008 m
9 mm0.009 m
10 mm0.01 m
15 mm0.015 m
20 mm0.02 m
25 mm0.025 m
30 mm0.03 m
40 mm0.04 m
50 mm0.05 m
60 mm0.06 m
75 mm0.075 m
100 mm0.1 m

Everyday millimeters in meters

What it ismmm
a sheet of paper (about)0.1 mm0.0001 m
a standard pencil lead2 mm0.002 m
a 8 mm drill bit8 mm0.008 m
the short side of an A4 sheet210 mm0.21 m
the long side of an A4 sheet297 mm0.297 m

Quick estimate in your head

Divide by 10^3: move the decimal point 3 places left.

About the units

Millimeter (mm). One thousandth of a meter. Used for engineering drawings, rainfall and screen sizes in some countries.

Meter (m). The SI base unit of length, defined by the distance light travels in 1/299,792,458 of a second.

Going the other way, 1 meter is 1,000 millimeters.

Questions

How many meters are in 1 millimeter?

1 millimeter is 0.001 meters, and 1 meter is 1,000 millimeters.

How do I convert millimeters to meters?

Use m = mm × 0.001. For example, 250 millimeters × 0.001 = 0.25 meters.

Is the millimeter to meter factor exact?

Yes, the definitions are exact, so the factor is exact. Results here are rounded to 6 significant digits for display.

How much is the long side of an A4 sheet in meters?

297 mm is 0.297 m.

Source for the conversion factor: NIST SP 811, Appendix B (conversion factors).

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