Km to Mm

A kilometer is greater than a millimeter. I know that a km is greater than a mm because of something called conversion factors. So when we need to convert 1 kilometers into millimeters, we use a conversion factor to get the answer.
What is a kilometer?
The kilometer (spelled kilometer in American English) is a metric unit of length equal to one thousand meters. In much of the world, it is now the standard measurement unit for communicating distances between geographical locations on land;
What is millimeters?
The millimeter is a unit of length in the metric system, equivalent to one thousandth of a meter (the SI base unit of length). Metric unit of length equal to one thousandth of a meter, which is the SI base unit of length.
How many millimeters in a kilometer?
1 kilometer is equal to 1000000 millimeter:
1km = 1km×1000000 = 1000000mm
How many kilometers in a millimeter?
1 millimeter is equal to 0.000001 kilometers:
1mm = 1mm/1000000 = 0.000001km
How to Convert Kilometer to Millimeter?
1 km = 1000000 mm
1 mm = 1.0E-6 km
Example: convert 15 km to mm:
15 km = 15 × 1000000 mm = 15000000 mm
Present Uses of Kilometers:
A kilometer is equal to 1,000 meters, in this, to measure the long distance, we use kilometer, which is the measurement between two places or points.
Present Uses of Millimeters:
In terms of real-world comparisons, a millimeter is roughly the size of the wire used in a standard paper clip. The metric system is based on decimals: There are 10 mm in a centimeter and 1000 mm in a meter.