Historical Units

坪(つぼ)

定義

畳2枚分の面積に等しい日本の面積の単位で、約3.306 m²(35.58平方フィート)。韓国の坪(ピョン)と同等。

解説

Defined as one ken squared (roughly 1.818 m × 1.818 m), the tsubo is still widely used in Japanese real estate listings even though metric is the legal standard. An average Japanese apartment of 70 m² is approximately 21 tsubo. The identical Korean pyeong shares the same origin and value; apartment sizes in South Korea are routinely quoted in pyeong alongside square meters.

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