Millimeters to Kilometers
1 Millimeter = 0.000001 Kilometers
Common amounts:
About the millimeter to kilometer conversion
The millimeter (mm) and the kilometer (km) are both units of length. Convert between metric and imperial length units — millimeters, meters, kilometers, inches, feet, yards, miles and nautical miles.
To convert millimeters to kilometers, multiply by 0.000001. To go back, multiply kilometers by 1,000,000.
Reference table
| Millimeters | Kilometers |
|---|---|
| 1 mm | 0.000001 km |
| 5 mm | 0.000005 km |
| 10 mm | 0.00001 km |
| 25 mm | 0.000025 km |
| 50 mm | 0.00005 km |
| 100 mm | 0.0001 km |
Need the reverse conversion? Convert Kilometers to Millimeters.
Convert Millimeter to other length units
Frequently asked questions
- How many kilometers is 1 millimeter?
- 1 Millimeter equals 0.000001 Kilometers. To go the other way, 1 Kilometer equals 1,000,000 Millimeters.
- What's the formula to convert millimeters to kilometers?
- Multiply the number of millimeters by 0.000001 to get kilometers. For example, 10 millimeters × 0.000001 = 0.00001 kilometers.
- Does this converter handle decimals and very large numbers?
- Yes. Type any real number, including decimals or values in the trillions. Math runs entirely in your browser — no server round-trip, no sign-up, and nothing to install.