Convert Jō (畳/Tatami) to square feet
East Asia · East Asian Land · active · modern
Conventional value The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact.
1 Jō (畳/Tatami) = 17.7927 square feet
square feet = Jō (畳/Tatami) × 17.792744
Convert any amount
Jō (畳/Tatami) to square feet table
| Jō (畳/Tatami) | square feet |
|---|---|
| 0.25 Jō (畳/Tatami) | 4.44819 square feet |
| 0.5 Jō (畳/Tatami) | 8.89637 square feet |
| 1 Jō (畳/Tatami) | 17.7927 square feet |
| 2 Jō (畳/Tatami) | 35.5855 square feet |
| 3 Jō (畳/Tatami) | 53.3782 square feet |
| 4 Jō (畳/Tatami) | 71.171 square feet |
| 5 Jō (畳/Tatami) | 88.9637 square feet |
| 10 Jō (畳/Tatami) | 177.927 square feet |
| 20 Jō (畳/Tatami) | 355.855 square feet |
| 25 Jō (畳/Tatami) | 444.819 square feet |
| 50 Jō (畳/Tatami) | 889.637 square feet |
| 100 Jō (畳/Tatami) | 1,779.27 square feet |
About the Jō (畳/Tatami)
Japanese room measure = 1 Tatami mat ≈ 1.65 m².
- Symbol
- 畳
- Value in SI
- 1 Jō (畳/Tatami) = 1.653 square metre
- Typical use
- surveying
- Source
- UnitConvertLab measurement atlas
Every atlas conversion routes through the SI square metre. See our methodology and data provenance pages for how these values are sourced and verified.
Related units and variant risk
Other east asian land units in the East Asia family, least settled first. If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.
Related conversions
Frequently asked
How many square feet are in a Jō (畳/Tatami)?
1 Jō (畳/Tatami) = 17.7927 square feet. Multiply the number of Jō (畳/Tatami) by 17.792744 to get square feet.
What is Jō (畳/Tatami) used for?
Japanese room measure = 1 Tatami mat ≈ 1.65 m². It is classified as active and dates from the modern period.
Is the Jō (畳/Tatami) value exact?
Yes for practical purposes. UnitConvertLab converts every atlas unit through the SI square metre, so the arithmetic itself introduces no rounding beyond the digits shown.
How reliable is this Jō (畳/Tatami) conversion?
Conventional value — The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact. Source: UnitConvertLab measurement atlas.
Cite this page
UnitConvertLab. (2026). Convert Jō (畳/Tatami) to square feet. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/jo-to-square-foot
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