Convert Kilometre to Millimetre
Instant length conversion, with the formula and a full reference table.
1 km
1,000,000 mm
1 mm = 0.000001 km
How to convert Kilometre to Millimetre
Multiply the number of kilometre by 1,000,000.
mm = km × 1,000,000
To go the other way, divide instead — or multiply by 0.000001.
Worked example
To convert 25 km: 25 × 1,000,000 = 25,000,000 mm.
Kilometre to Millimetre conversion table
| Kilometre (km) | Millimetre (mm) |
|---|---|
| 1 | 1,000,000 |
| 2 | 2,000,000 |
| 3 | 3,000,000 |
| 5 | 5,000,000 |
| 10 | 10,000,000 |
| 20 | 20,000,000 |
| 25 | 25,000,000 |
| 50 | 50,000,000 |
| 100 | 100,000,000 |
| 250 | 250,000,000 |
| 500 | 500,000,000 |
| 1,000 | 1,000,000,000 |