Kílómetrum

Kílómetrum is the Esperanto word for kilometer. A kilometer is a unit of length in the metric system, equivalent to one thousand meters. It is the standard international unit for measuring distance. The symbol for kilometer is km. The kilometer is a commonly used unit for expressing distances between geographical locations, such as cities or countries, and for road signage.

The meter, the base unit of length in the International System of Units (SI), is defined based on the speed of light. The kilometer is derived from the meter by multiplying it by 1000. Therefore, one kilometer equals 1000 meters. This prefix system, using "kilo-" for 1000, is consistent across many SI units, such as kilogram (1000 grams) and kiloliter (1000 liters).

In practice, kilometers are used globally for everyday measurements of distance. For example, a typical car's odometer displays distance traveled in kilometers, and speed limits on roads are often posted in kilometers per hour (km/h). The conversion to other units, such as miles, is often necessary for those accustomed to imperial systems. One kilometer is approximately equal to 0.621371 miles.