A kilometer is a measuring unit for length in the metric system.
Metric measurements of length are millimeter mm , centimeter cm , meter m , kilometer km.
The conversions on this site will not be accurate enough for all applications.
Learning some of the more commonly used metric prefixes, such as kilo-, mega-, giga-, tera-, centi-, milli-, micro-, and nano-, can be helpful for quickly navigating metric units.
Metric prefixes range from factors of 10 -18 to 10 18 based on a decimal system, with the base in this case the meter having no prefix and having a factor of 1.
Objective: I know how to convert between different metric measurements.