Area conversion formula
United States customary units / Imperial units
Japanese units of measurement
* About tatami mats (畳 / 帖 / jō)
When written as “畳”, it is not always 1.62 m2. There are various dimensions of tatami mats such as Edo-ma and Kyo-ma. I made ”Unit Converter: Tatami”, so please use it.
When written as “帖”, it is 1.62 m2. The “畳 / 帖” written in the recent housing advertisement is 1.62 m2.