Metres to Millimetres (m to mm)
1 m = 1,000 mm. Multiply metres by 1,000; the box below does it both ways.
millimetres
0.25 m = 250 mm · millimetres to metres page
How to convert metres to millimetres
- Take the value in metres.
- Multiply by 1,000 (because 1 m = 1,000 mm).
- Example: 0.25 m × 1,000 = 250 mm.
- Going back: divide by 1,000, or multiply by 0.001.
Where this comes up
Multiply by 1000. 0.6 m is 600 mm, 2.1 m is 2100 mm, the sizes a fabricator wants on a drawing.
| m | mm |
|---|---|
| 0.001 | 1 |
| 0.01 | 10 |
| 0.1 | 100 |
| 0.25 | 250 |
| 0.5 | 500 |
| 1 | 1,000 |
| 1.2 | 1,200 |
| 1.5 | 1,500 |
| 2 | 2,000 |
| 2.4 | 2,400 |
| 3 | 3,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 100 | 1,00,000 |
Questions people ask
How many millimetres are in 1 metre?
1 m = 1,000 mm. To convert, multiply the metre value by 1,000.
What is 1.5 m in mm?
1.5 m is 1,500 mm.
How do I convert millimetres back to metres?
Divide by 1,000, or multiply by 0.001: 1 mm = 0.001 m.
More length conversions
Millimetres to Metres (mm to m) · 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.