1 millimeter to kilometers
1 mm = 0.000001 km. Change the amount below, or read the formula and the reference table further down.
1 millimeter equals
kilometers
1 mm = 0.000001 km
The formula
Millimeters and kilometers both measure length from the same zero, so a single multiplier does the job.
km = mm × 0.000001
Going the other way? Convert kilometers to millimeters.
Millimeters to kilometers table
Values either side of 1 mm.
| Millimeters (mm) | Kilometers (km) |
|---|---|
| -4 | -0.000004 |
| -3.5 | -0.000004 |
| -3 | -0.000003 |
| -2.5 | -0.000003 |
| -2 | -0.000002 |
| -1.5 | -0.000002 |
| -1 | -0.000001 |
| -0.5 | -5.0000 × 10^-7 |
| 0 | 0 |
| 0.5 | 5.0000 × 10^-7 |
| 1 | 0.000001 |
| 1.5 | 0.000002 |
| 2 | 0.000002 |
| 2.5 | 0.000003 |
| 3 | 0.000003 |
| 3.5 | 0.000004 |
| 4 | 0.000004 |
| 4.5 | 0.000005 |
| 5 | 0.000005 |
| 5.5 | 0.000006 |
| 6 | 0.000006 |
Questions people ask
- How many kilometers are in a millimeter?
- One millimeter equals 0.000001 kilometers.
- How do I convert millimeters to kilometers by hand?
- Multiply the number of millimeters by 0.000001. For a rough check, 0 is close enough for most everyday use.
- What is 1 millimeter in kilometers?
- 1 millimeter is 0.000001 kilometers.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.