3 millimeters to meters

3 millimeters = 0.003 meters

Rounded to a practical precision: 0 m.

millimeters

meters

How the calculation works

One millimeter is 0.001 meters, so:

3 mm × 0.001 = 0.003 m

Reversing it, 0.003 meters ÷ 0.001 returns 3 millimeters.

Nearby values

Millimeters	Meters
1 mm	0.001 m
1.5 mm	0.0015 m
2 mm	0.002 m
2.5 mm	0.0025 m
3 mm	0.003 m
3.5 mm	0.0035 m
4 mm	0.004 m
4.5 mm	0.0045 m
5 mm	0.005 m

In everyday terms, 3 millimeters is thinner than a pencil.

About these units

Millimeter (mm) — A millimetre is one thousandth of a metre and is the default unit on engineering drawings and rulers.

Meter (m) — The metre is the SI base unit of length, defined since 1983 as the distance light travels in a vacuum in 1/299,792,458 of a second.

Frequently asked questions

How many meters is 3 millimeters?

3 millimeters is 0.003 meters.

How do I convert millimeters to meters myself?

Multiply by 0.001. To go back, divide by 0.001 — or multiply by 1,000.

Is this figure exact?

The conversion factor between the millimeter and the meter is fixed by definition. The figure above is rounded for readability; the converter carries full precision.

Convert other values

Full millimeters to meters converter · All length converters