mm to km Conversion

Use this mm to km conversion tool to easily convert from millimeters to kilometers (and vice versa).

Clear
Result1.0e-6 km1 mm converted
1 mm equals1.0e-6 km
1 km equals1,000,000 mm

Millimeter to kilometer reference

millimeterkilometer
1 mm1.0e-6 km
2 mm2.0e-6 km
5 mm5.0e-6 km
10 mm1.0e-5 km
25 mm2.5e-5 km
50 mm5.0e-5 km
100 mm0.0001 km
500 mm0.0005 km
1,000 mm0.001 km

How to convert millimeter to kilometer

One millimeter equals 1.0e-6 km, so multiply the number of millimeters by 1.0e-6:

km = mm × 1.0e-6

Going the other way

One kilometer equals 1000000 mm, so to convert back:

mm = km × 1000000

Both directions are shown in the results above, and the drop-downs let you convert between any pair of length units — not just these two.