hectometre

{{Infobox unit

| image = File:Kheops-Pyramid.jpg

| caption = The Great Pyramid of Giza is 137.7 metres high, which is 1.377 hectometres.

| symbol = hm

| standard = SI

| quantity = length

| units1 = SI base units

| inunits1 = {{val|100|ul=m}}

| units2 = imperial/US units

| inunits2 = {{convert|1|hm|yd|disp=out|lk=on|sigfig=5}}
{{convert|1|hm|in|disp=out|lk=on|sigfig=5}}

}}

{{short description|SI unit of length}}

The hectometre, (SI symbol: hm{{Cite web|url=https://www.abbreviations.com/abbreviation/hectometre|title=What is the abbreviation for hectometre?|website=www.abbreviations.com|language=en|access-date=2018-07-10}}), spelt hectometer in American and Philippine English, is a unit of length in the International System of Units (SI), equal to one hundred metres{{Cite web|url=https://www.oxfordlearnersdictionaries.com/definition/english/hectometre|title=hectometre noun - Definition, pictures, pronunciation and usage notes {{!}} Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com|website=www.oxfordlearnersdictionaries.com|language=en|access-date=2018-07-10}} and to one tenth of a kilometre. The word comes from a combination of "metre" and the SI prefix "hecto-", meaning "hundred".{{Cite web|url=https://www.unc.edu/~rowlett/units/prefixes.html|archive-url=https://web.archive.org/web/20180419192722/https://www.unc.edu/~rowlett/units/prefixes.html|url-status=dead|archive-date=2018-04-19|title=Metric and SI Unit Prefixes|website=www.unc.edu|access-date=2018-07-10}} It is not commonly used in English.{{cn|date=March 2020}} A football field (either soccer or American) is approximately 1 hectometre in length.{{Cite web|url=https://www.sportscourtdimensions.com/soccer/|title=Soccer (FIFA) Field Dimensions & Layout - SportsCourtDimensions.com|website=www.sportscourtdimensions.com|language=en-US|access-date=2018-07-10}}{{Cite web|url=http://www.courtdimensions.net/soccer-field/|title=Soccer Field Dimensions & Measurements|website=www.courtdimensions.net|access-date=2018-07-10}} The hectare (ha), a common metric unit for land area, is equal to one square hectometre (hm²).

The hectometer has sometimes been used for expressing the distance to a target in warfare.http://www.navweaps.com/index_tech/tech-044.php {{Bare URL inline|date=August 2024}}{{Cite web|url=https://www.scribd.com/document/109806560/Field-Artillery-Journal-Sep-1927|title=Field Artillery Journal - Sep 1927 | PDF | Shell (Projectile) | Howitzer|website=Scribd}}{{Cite web|url=https://www.usni.org/magazines/proceedings/1956/january/sinking-scharnhorst|title=The Sinking Of The Scharnhorst | Proceedings - January 1956 Vol. 82/1/635}}