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Chinese name
Korean name
Japanese name
Kana つぼ

A pyeong (Hangul, Japanese Romaji: tsubo; Chinese: ; pinyin: píng; Pe̍h-ōe-jī: phêng), is an areal unit used to measure the size of rooms or buildings in Korea, Japan, and Taiwan equal to 36 shaku2, where one shaku (尺, Japanese foot; Hangul; RRja[1][2]) is 1033 m. Thus, one pyeong is approximately 400121  square metres (3.3058 m2, 3.954 sq yd or 35.586 sq ft). This unit is derived from Chinese Zhou Dynasty '' unit.

In Japan, the size of a room is often measured by the number of tatami mats (-畳 -). Alternatively, house floor area is measured in terms of tsubo, where one tsubo is the area of two tatami mats (a square). One tsubo is almost the area of 2 blocks of the standard tatami put together into a square since the Edo Period (江戸時代).

Although Japanese rule in Taiwan ended in 1945 and Taiwan is now fully metricated, the ping is still commonly used.

In South Korea, a new law enacted as of July 1, 2007, will replace the use of pyeong in official documents with the square metre.[3] A studio apartment will generally be around 8 to 12 pyeong, a house somewhere around 25 or more, and the smallest of rooms, consisting of only a bed and a bit of floor space for students, will be as little as 1.5 pyeong.

See also[edit]