Kilometer to Millimeter conversion

Convert between Kilometer (km) and Millimeter (mm) or vice versa.

About Kilometer to Millimeter conversion

What is Kilometer?

A kilometer is one thousand meters, commonly used for measuring long distances.

What is Millimeter?

A millimeter is one thousandth of a meter, used for small scale measurements.

How to convert Kilometer to Millimeter using our tool?

Enter the Kilometer value in the input field above. Our tool will automatically convert the value to Millimeter. You can also use the dropdown to select any other unit you want to convert to. The conversion is instant and you can see the result immediately, even when you change the units.