Kilometers originated in England. Kilometer is an international standard unit of length measurement, with the symbol km, which comes from the English word kilometer. Kilograms are thousands, meters are meters and kilometers are kilometers.

Kilometers, also known as kilometers, are units of length and are usually used to measure the distance between two places. For example, cables, highways, bridges, pipelines and other relatively long distances are all measured in kilometers.

"Kilometers (km) is a multiple of the international system of units"; Scope of application of kilometers: international use; 1 km =1000m =100000m.