公尺(kong-tshioh)抑(bí)是咧量長短的單位,伊是國際單位制基本單位之一,記做m,本底法國科學院(French Academy of Sciences)共赤道經過巴黎(Paris)到北極的1/10,000,000定做一米,現此時國際斗秤尺局(International Bureau of Weights and Measures)共佇真空一秒鐘走的距離的光速分之一定做一米。

一米約量3.28英尺,共m頭前加SI字頭(SI prefix)會當得著一寡長短的組合單位,比論講1km就是1公里= 1000公尺,1cm 就是公分 = 1/100公尺。

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