坪（日本）
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定义
日本面积单位，等于两张榻榻米的面积，约3.306 m²（35.58平方英尺），与韩国的坪（평）等值。
解释
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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