Convert Jō (畳/Tatami) to acres
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) = 0.000408465 acres
acres = Jō (畳/Tatami) × 0.0004084652
Convert any amount
Jō (畳/Tatami) to acres table
| Jō (畳/Tatami) | acres |
|---|---|
| 0.25 Jō (畳/Tatami) | 0.000102116 acres |
| 0.5 Jō (畳/Tatami) | 0.000204233 acres |
| 1 Jō (畳/Tatami) | 0.000408465 acres |
| 2 Jō (畳/Tatami) | 0.00081693 acres |
| 3 Jō (畳/Tatami) | 0.0012254 acres |
| 4 Jō (畳/Tatami) | 0.00163386 acres |
| 5 Jō (畳/Tatami) | 0.00204233 acres |
| 10 Jō (畳/Tatami) | 0.00408465 acres |
| 20 Jō (畳/Tatami) | 0.0081693 acres |
| 25 Jō (畳/Tatami) | 0.0102116 acres |
| 50 Jō (畳/Tatami) | 0.0204233 acres |
| 100 Jō (畳/Tatami) | 0.0408465 acres |
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 If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.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 acres are in a Jō (畳/Tatami)?
1 Jō (畳/Tatami) = 0.000408465 acres. Multiply the number of Jō (畳/Tatami) by 0.0004084652 to get acres.
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 acres. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/jo-to-acre
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