Klick is a term the United States military uses in place of kilometers. A klick is equivalent to 1,000 meters or 0.62 miles.
Each branch of the military uses its own terms and acronyms in place of everyday words for coding or secretive purposes. Some terms, such as "klick," are used in all branches of the military. Klick is sometimes spelled "click" and it is a unit of length. The use of the term in relation to military units of measurements dates back to the 1950s. The military also uses the term as klicks per hour rather than kilometers per hour.