Convert square metres to Jō (畳/Tatami)
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 square metre = 0.604961 Jō (畳/Tatami)
Jō (畳/Tatami) = square metres × 0.60496068
Convert any amount
square metres to Jō (畳/Tatami) table
| square metres | Jō (畳/Tatami) |
|---|---|
| 0.25 square metres | 0.15124 Jō (畳/Tatami) |
| 0.5 square metres | 0.30248 Jō (畳/Tatami) |
| 1 square metre | 0.604961 Jō (畳/Tatami) |
| 2 square metres | 1.20992 Jō (畳/Tatami) |
| 3 square metres | 1.81488 Jō (畳/Tatami) |
| 4 square metres | 2.41984 Jō (畳/Tatami) |
| 5 square metres | 3.0248 Jō (畳/Tatami) |
| 10 square metres | 6.04961 Jō (畳/Tatami) |
| 20 square metres | 12.0992 Jō (畳/Tatami) |
| 25 square metres | 15.124 Jō (畳/Tatami) |
| 50 square metres | 30.248 Jō (畳/Tatami) |
| 100 square metres | 60.4961 Jō (畳/Tatami) |
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 If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.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 Jō (畳/Tatami) are in a square metre?
1 square metre = 0.604961 Jō (畳/Tatami). Multiply the number of square metres by 0.60496068 to get Jō (畳/Tatami).
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 square metres to Jō (畳/Tatami). UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/square-meter-to-jo
Report an incorrect value or source
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