Millimetres to Metres (mm to m)
1 mm = 0.001 m. Multiply millimetres by 0.001; the box below does it both ways.
metres
100 mm = 0.1 m · metres to millimetres page
How to convert millimetres to metres
- Take the value in millimetres.
- Multiply by 0.001 (because 1 mm = 0.001 m).
- Example: 100 mm × 0.001 = 0.1 m.
- Going back: divide by 0.001, or multiply by 1,000.
Where this comes up
Divide by 1000. Engineering drawings are in millimetres, quantities for billing in metres: a 2440 mm sheet is 2.44 m, a 3000 mm span is 3 m.
| mm | m |
|---|---|
| 1 | 0.001 |
| 10 | 0.01 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 750 | 0.75 |
| 1,000 | 1 |
| 1,200 | 1.2 |
| 1,500 | 1.5 |
| 2,000 | 2 |
| 2,440 | 2.44 |
| 3,000 | 3 |
| 10,000 | 10 |
Questions people ask
How many metres are in 1 millimetre?
1 mm = 0.001 m. To convert, multiply the millimetre value by 0.001.
What is 1,000 mm in m?
1,000 mm is 1 m.
How do I convert metres back to millimetres?
Divide by 0.001, or multiply by 1,000: 1 m = 1,000 mm.
More length conversions
Metres to Millimetres (m to mm) · m to ft · ft to m · cm to in · in to cm · cm to ft · ft to cm · mm to in · in to mm · ft to in · in to ft · all converters
Factors are the exact international definitions; last checked 2026-10-10.