mm to km
92 unitsResult1.000000e-6
0.000001km
1 mm × 0.000001 = 0.000001 km
Convert Millimeter to Kilometer (mm to km)
1 millimeter = 0.000001 kilometers. Convert millimeters to kilometers instantly, with the exact factor, the formula and a reference table of common values.
Formula
kilometers = millimeters × 0.000001
mm to km conversion table
| mm | km |
|---|---|
| 1 mm | 0.000001 km |
| 2 mm | 0.000002 km |
| 3 mm | 0.000003 km |
| 5 mm | 0.000005 km |
| 10 mm | 0.00001 km |
| 20 mm | 0.00002 km |
| 50 mm | 0.00005 km |
| 100 mm | 0.0001 km |
| 250 mm | 0.00025 km |
| 500 mm | 0.0005 km |
| 1000 mm | 0.001 km |
What is a millimeter?
A millimeter is one thousandth of a meter, and ten millimeters make one centimeter. It is the unit engineers, machinists, and builders reach for when a fraction of a centimeter would be too rough.
A credit card is about 0.8 mm thick and a standard pencil lead is 0.7 mm across. Rainfall, screw sizes, plywood thickness, and phone dimensions are all usually given in millimeters.
In writing, the millimeter is usually shortened to "mm". One millimeter is 0.001 meters, and that ratio is what every figure on this page is built from.