How do you work out mm to km?

Answer 1

You could go through meters. Example.

10,000 millimeters (1 meter/1000 mm)(1 kilometer/1000 meters)

= 0.01 kilometers

============

Answer 2

To convert millimeters to kilometers, divide the length in millimeters by 1,000,000 (since there are 1,000,000 millimeters in a kilometer). For example, to convert 5,000 millimeters to kilometers, you would divide 5,000 by 1,000,000 to get 0.005 kilometers.

Answer 3

Multiply mm by 0.000001