Full name: metre
Plural form: metres
Alternate spelling: meters
Category type: length
Scale factor: 1
The SI base unit for length is the metre.
Valid units must be of the length type.
You can use this form to select from known units:
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.