One millimeter (mm) equals 0.1 centimeters (cm).

0.1 centimeters equals 0.01 decimeters (dm).

0.01 decimeters equals 0.001 meters (m).

0.001 meters equals 0.0001 dekameters (dam).

0.0001 dekameters equals 0.00001 hectometers (hm).

0.00001 hectometers equals 0.000001 kilometers (km).
The Metric System
Kilometer to Millemeter
One kilometer equals ten hectometers.

Ten hectometers equals one hundred dekameters.

One hundred dekameters equals one thousand meters.

One thousand meters equals ten
thousand decimeters.

Ten thousand decimeters equals one hundred thousand centimeters.

One hundred thousand centimeters
equals one million millimeters.
Millimeter to Kilometer