Millimeters to Meters
A millimeter is one thousandth of a meter, the standard unit on rulers and rainfall gauges worldwide. The meter is the SI base unit of length, defined by the distance light travels in 1/299,792,458 of a second. 1 mm equals 0.001 m, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to length, measured here against length's base unit (m) — every other length unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
m = mm × 0.001
mm = m × 1,000
Worked example: 5 mm × 0.001 = 0.005 m.
Conversion table
| Millimeter (mm) | Meter (m) |
|---|---|
| 1 mm | 0.001 m |
| 2 mm | 0.002 m |
| 3 mm | 0.003 m |
| 5 mm | 0.005 m |
| 10 mm | 0.01 m |
| 20 mm | 0.02 m |
| 25 mm | 0.025 m |
| 50 mm | 0.05 m |
| 100 mm | 0.1 m |
| 250 mm | 0.25 m |
| 500 mm | 0.5 m |
| 1,000 mm | 1 m |
Frequently asked
- How many Meters in a millimeter?
- 1 mm equals 0.001 m.
- How do I convert Millimeters to Meters?
- Multiply the value in mm by 0.001 to get m. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Millimeter and Meter are both defined by a fixed conversion factor to length's base unit (m), so the result shown is exact to the precision displayed, not an approximation.