Kilometer

From WikiMD's Wellness Encyclopedia

Kilometer is a unit of length in the metric system, equal to one thousand metres (kilo- being the SI prefix for 1000). It is now the measurement unit used officially for expressing distances between geographical places on land in most of the world; notable exceptions are the United States and the United Kingdom where the mile is still used in some contexts.

History[edit | edit source]

The term kilometer first came into use during the French Revolution, as part of a new system of measures. The prefix 'kilo-' is derived from the Greek word χίλιοι (chilioi), meaning 'thousand'. The term was officially adopted as a unit of measurement by the French First Republic in 1795.

Usage[edit | edit source]

In most countries, the kilometer is used to measure road distances, while the nautical mile is used for sea and air distances. However, in the United States and the United Kingdom, distances are still often expressed in miles rather than kilometers.

Conversion[edit | edit source]

One kilometer is equivalent to 0.621371 miles, 1093.61 yards, or 3280.84 feet.

See also[edit | edit source]

Kilometer Resources
Wikipedia
WikiMD
Navigation: Wellness - Encyclopedia - Health topics - Disease Index‏‎ - Drugs - World Directory - Gray's Anatomy - Keto diet - Recipes

Search WikiMD

Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD

WikiMD's Wellness Encyclopedia

Let Food Be Thy Medicine
Medicine Thy Food - Hippocrates

Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.

Contributors: Prab R. Tumpati, MD