meter
meter
metric
length / distance
gram
It's metric and imperial.
Established in 1960 by the international agreement, the "Metric System" is the international standard of measurement.
In the earlier times, there was no unit to measure the distance and thus there was no symmetry. To fight this problem, in 1790, french developed a standard unit of measurement called the metric system.
Measurement, standard, International, attributes.
Imperial and Metric Systems.
The English system and the metric system.
Liters are a metric measurement of volume. Kilometers are a metric measurement of distance, so the question makes no sense.
There are many units for measuring length and distance . S.I units for length and distance is meter (m).