SI base quantity: length This category of measurement units is defined by the "length" type, which is an SI base quantity. The SI base unit for length is the metre. Travel distance If you are traveling, you can measure your travel distance or check the distance between cities and the driving distances for your next trip. Definition: Meter The metre, symbol: m, is the basic unit of distance (or of "length", in the parlance of the physical sciences) in the International System of Units. The internationally-accepted spelling of the unit in English is "metre", although the American English spelling meter is a common variant. However, both American and non-American forms of English agree that the spelling "meter" should be used as a suffix in the names of measuring devices such as chronometers and micrometers. agate [typographical] alen [Scandinavia] arpent [Canada] arpent [France] arsheen [Russia] astronomical unit block [East U.S.] block [Midwest U.S.] block [South, West U.S.] braccio [Italy] braza [Argentina] cable [British] chain [Gunter, survey] chain [Ramsden, engineer] city block [East U.S.] city block [Midwest U.S.] city block [South, West U.S.] click [U.S. military] cuadra [Argentina] cubit [Egyptian] cubit [English] cubit [Royal Egyptian] douzième [print] douzième [watchmaking] estadio [Portugal] estadio [Spain] faden [Austria] faden [Switzerland] fall [Scotland] fathom [ancient] faust [Hungary] foot [Netherlands] foot [pre-1963 Canada] football field [Canada] football field [U.S., complete] football field [U.S.] furlong [international] furlong [survey] hand [non-equine] klafter [Austria] klafter [Switzerland] lap [competition] lap [olympic pool]

league [ancient Celtic] league [nautical] league [UK nautical] league [US statute] legua [Spanish, post-1568] legua [Spanish, pre-1568] li [ancient China] li [imperial China] li [modern China] lieue [France, metric] lieue [France, nautical] link [Gunter, survey] link [Ramden, engineer] meile [Austria] meile [geographische] meile [North Germany] metric mile [high school] miil (mijl) [Danish] miil (mijl) [Denmark] miil (mijl) [Sweden, ancient] mile [Britain, ancient] mile [international] mile [nautical, international] mile [nautical, UK] mile [nautical, US] mile [Roman, ancient] mile [Scottish] mile [statute, international] mile [statute, US] milha [Portuguese] military pace [double time] milla [Spanish] milliare [Rome] palm [Britain, Roman minor] palm [US, Roman major] palmo [Portuguese] palmo [Spanish] pe [Portuguese] perch [Ireland] pie [Argentina] point [Britain, US] polegada [Portuguese] quarter [cloth] quarter [print] rod [international] shaftment [ancient] vara [California] vara [Portuguese] vara [South America] zoll [Switzerland]