Metres to millimetres converter
Millimetres (mm)
1 metre = 1,000 millimetres
How to convert metres to millimetres
mm = m × 1000
Multiply the number of metres by 1000 to get millimetres. Going the other way, divide by 1000 (or multiply by 0.001).
One metre is exactly defined as 1000 millimetres (to 12 significant figures), and one millimetre is 0.001 metres.
Worked examples
- Convert 5 metres: 5 × 1000 = 5,000 5,000 millimetres.
- Convert 12.5 metres: 12.5 × 1000 = 12,500 12,500 millimetres.
- Convert 250 metres: 250 × 1000 = 250,000 250,000 millimetres.
Quick-reference table
| m | mm |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 15 | 15,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 75 | 75,000 |
| 100 | 100,000 |
| 1,000 | 1,000,000 |
| mm | m |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 75 | 0.075 |
| 100 | 0.1 |
| 1,000 | 1 |
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Frequently asked questions
How many millimetres are in 1 metre?
1 metre equals 1,000 millimetres.
What is the formula to convert metres to millimetres?
Use mm = m × 1000. Multiply the number of metres by 1000 to get millimetres. Going the other way, divide by 1000 (or multiply by 0.001).
What is 100 metres in millimetres?
100 metres is 100,000 millimetres.