Millimeters to Kilometers Converter
1 millimeter = 0.000001 kilometers
1 millimeter equals 0.000001 kilometers
How to convert millimeters to kilometers
Feet, inches, yards and miles use the international foot (0.3048 m). Older US survey-foot records use a different definition; check the survey document before applying these factors.
km = mm × 0.000001One millimeter is 0.000001 kilometers, so a single multiplication converts any value.
0.00001 km = 10 × 0.000001Millimeters to kilometers conversion table
Common values in millimeters, converted to kilometers.
| Millimeters (mm) | Kilometers (km) |
|---|---|
| 1 | 0.000001 |
| 2 | 0.000002 |
| 3 | 0.000003 |
| 4 | 0.000004 |
| 5 | 0.000005 |
| 10 | 0.00001 |
| 20 | 0.00002 |
| 25 | 0.000025 |
| 50 | 0.00005 |
| 100 | 0.0001 |
| 250 | 0.00025 |
| 500 | 0.0005 |
| 1,000 | 0.001 |
About these units
millimetermm
One thousandth of a metre, the usual unit for engineering drawings.
kilometerkm
One thousand metres. The standard unit for road distance in most of the world.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.