Convert kilometers to millimeters
Enter a kilometers value below and convert to millimeters
km
1 kilometer =
1000000 millimeters
* exact result
Select how many decimal places the result will be rounded to:
How to convert kilometers to millimeters
To convert kilometers to millimeters, multiply a kilometers value by 1000000.
Formula mm = km × 1000000
Example: Convert 0.01 kilometers to millimeters Calculations: 0.01 km × 1000000 = 10000 mm
Kilometer (km)
The kilometer is a unit of length in the metric system equal to 1000 meters, or about 0.6214 miles. Kilometers are widely used for measuring distances between geographical locations.
Millimeter (mm)
The millimeter is a unit of length equal to 1/1000 of a meter, or about 0.03937 inches. It is used for precise measurements across various fields, such as engineering and construction.