Convert millimeters to kilometers instantly. 5 mm = 0.000005 km.
1 mm = 0.000001 km
To convert millimeters to kilometers, use the formula km = mm × 0.000001. In other words, multiply the number of millimeters by 0.000001 to get the equivalent in kilometers. For example, 5 mm equals 0.000005 km.
| MM (mm) | KM (km) |
|---|---|
| 1 mm | 0.000001 km |
| 2 mm | 0.000002 km |
| 3 mm | 0.000003 km |
| 4 mm | 0.000004 km |
| 5 mm | 0.000005 km |
| 6 mm | 0.000006 km |
| 7 mm | 0.000007 km |
| 8 mm | 0.000008 km |
| 9 mm | 0.000009 km |
| 10 mm | 0.00001 km |
| 15 mm | 0.000015 km |
| 20 mm | 0.00002 km |
| 25 mm | 0.000025 km |
| 30 mm | 0.00003 km |
| 40 mm | 0.00004 km |
| 50 mm | 0.00005 km |
| 75 mm | 0.000075 km |
| 100 mm | 0.0001 km |
| 250 mm | 0.00025 km |
| 500 mm | 0.0005 km |
| 1,000 mm | 0.001 km |
The millimeter (mm) and the kilometer (km) are both units of length. This page gives you an instant, exact conversion between them, a reference table for the most common values, and the underlying formula so you can check the maths yourself. All calculations run in your browser — nothing you type is sent anywhere.
Need to go the other way? Use the KM to MM converter. For all units at once, try the full Length Converter.
Use the formula km = mm × 0.000001. For example, 5 mm equals 0.000005 km. Just enter your value in the converter above to get an instant result.
1 mm = 0.000001 km. You can multiply any number of millimeters by this figure to convert it, or use the calculator above for exact results.
Use the reverse conversion: 1 km = 1,000,000 mm. Our KM to MM converter does this for you.