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Millimeter Kilometer Converter

Enter a value in one of the fields to convert millimeters to kilometers:

Formula

To calculate the length in kilometers you divide the length in millimeters by 1,000,000.0:

About the Units

Millimeter

The millimeter is an international unit for measuring very small lengths. It equals 0.001 meters and 0.1 centimeters.

Kilometer

The kilometer is an international unit of length for measuring large distances. It equals exactly 1,000 meters.

Important Distances

  Millimeters Kilometers
Marathon 42,195,000.0 42.2
Race track "Mille Miglia" 1,609,300,000.0 1,609.3
Earth radius 6,378,165,000.0 6,378.2
Earth circumference 40,075,192,000.0 40,075.2
Distance earth ↔ moon 384,400,000,000.0 384,400.0
Distance earth ↔ sun 149,593,780,000,000.0 149,593,780.0