Kilometre
| kilometre | |
|---|---|
 | |
| General information | |
| Unit system | SI |
| Unit of | length |
| Symbol | km |
| Conversions | |
| 1 km in ... | ... is equal to ... |
| SI base units | 1000 m |
| imperial/US units | ≈ 0.62137 mi ≈ 1093.6 yd ≈ 3280.8 ft |
| nautical units | ≈ 0.53996 nmi |
The kilometre (SI symbol: km; /ˈkɪləmiːtər/ or /kɪˈlɒmətər/), spelt kilometer in American English, is a unit of length in the International System of Units (SI), equal to one thousand metres (kilo- being the SI prefix for 1000). It is the preferred measurement unit to express distances between geographical places on land in most of the world; notable exceptions are the United States, the United Kingdom, and Liberia where the statute mile is used.