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Tsubo to Square Meter / Tatami Area Converter
Convert between square meters (m²), tsubo, and tatami mats. Check tsubo to sqm, sqm to tsubo, and how many square meters 6 tatami is for Japanese real estate sizes.
Tsubo, Square Meter, and Tatami Conversion
Enter a value in square meters (m²), tsubo, or jyo (tatami mats), and this tool will instantly convert it to the other two units. It's a handy tool for understanding Japanese real estate listings where sizes are often listed in tsubo or tatami mats.
The calculator uses 1 tsubo = 400/121 square meters, about 3.305785 m². With the Japanese real estate standard, 1 tatami mat is treated as 1.62 m², so you can quickly check tsubo to sqm, sqm to tsubo, and tatami to m2.
This converter is best when you want to enter an exact value. If you want to scan common room sizes in a list, use the Tsubo / Tatami Area Reference Table.
About Jyo (Tatami Mat) Sizes
Example: 15 tsubo is about 49.59 m². Using the real estate standard of 1.62 m² per tatami mat, that is about 30.61 tatami mats.
The size of one "jyo" (tatami mat) varies depending on the region and the type of building in Japan. You can select from the following standards based on your needs:
- Real Estate Standard (1.62 m²): This is the official minimum standard used in Japanese real estate listings.
- Chukyo-ma (1.6562 m²): Traditionally used in the Chukyo region (Aichi, Gifu, Mie).
- Edo-ma (1.548 m²): Common in the Kanto region (Tokyo area) and in many modern homes.
- Kyo-ma (1.824 m²): Mostly used in the Kansai region (Kyoto, Osaka). It is the largest standard.
- Danchi-ma (1.445 m²): Often used in public housing complexes (danchi) and apartments. It is the smallest standard.
Frequently asked questions
How many square meters is 1 tsubo?
1 tsubo is calculated as 400/121 square meters (approximately 3.305785 m²). This is the standard calculation based on the Japanese Measurement Act.
How do I convert square meters to tsubo?
Divide the square meter value by 3.305785 to estimate tsubo. The calculator does this automatically for any value you enter.
How many square meters is 6 tatami?
Using the common Japanese real estate standard of 1 tatami mat = 1.62 m², 6 tatami is 9.72 m². Other tatami standards may produce different results.
How many tatami mats is 15 tsubo?
Using the Japanese real estate standard of 1 tatami mat = 1.62 m², 15 tsubo is about 30.61 tatami mats. The result changes if you choose a different tatami size standard.
How many square meters is 1 jyo (tatami mat)?
According to the Japanese real estate standard, 1 jyo is defined as 1.62 m² or more. However, traditional sizes like Chukyo-ma (1.6562 m²) or Edo-ma (1.548 m²) may be used depending on the region and building type.
Are my entered area values saved?
No. Area conversion runs locally in your browser and entered values are not sent to a server.