🗺️ Square Inches to Jō (Tatami Mats, Japan) Converter

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Converted Value
0.00995617

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⚡ Square Inches to Jō (Tatami Mats, Japan): the quick answer

1 in² = 0.000398247 jō 1 square inch equals 0.000398247 jō (tatami mats, Japan)

To convert square inches to jō (tatami mats, Japan), multiply the value by 0.000398247. To go the other way, multiply jō (tatami mats, Japan) by 2,511.01 to get square inches.

↔ Convert jō (tatami mats, Japan) to square inches instead

🧮 Formula

Square Inches to Jō (Tatami Mats, Japan)
jō = in² × 0.000398247
Jō (Tatami Mats, Japan) to Square Inches
in² = jō × 2,511.01

Where

  • in² = the area in square inches
  • jō = the area in jō (tatami mats, Japan)
Every unit here is defined by its area in square meters, so the conversion factor is (square meters per square inch) ÷ (square meters per jō (tatami mat, Japan)).

📊 Square Inches to Jō (Tatami Mats, Japan) conversion table

Square Inches (in²)Jō (Tatami Mats, Japan) (jō)
1 in²0.000398247 jō
2 in²0.000796494 jō
5 in²0.00199123 jō
10 in²0.00398247 jō
20 in²0.00796494 jō
50 in²0.0199123 jō
100 in²0.0398247 jō
500 in²0.199123 jō
1,000 in²0.398247 jō

✏️ Worked examples

Convert 25 square inches to jō (tatami mats, Japan)

25 in² × 0.000398247 = 0.00995617 jō

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Convert 250 square inches to jō (tatami mats, Japan)

250 in² × 0.000398247 = 0.0995617 jō

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📘 About these units

Square inch (in²). A square inch is the area of a square with 1-inch sides (6.4516 cm²).

Jō (tatami mat, Japan) (jō). In Japanese property listings one jō (tatami mat) is counted as at least 1.62 m². Actual mat sizes vary by region (about 1.5 to 1.8 m²). Used in: Asia — Japan, Korea & Taiwan.

❓ Frequently asked questions

How many jō (tatami mats, Japan) are in one square inch?

There are 0.000398247 jō (tatami mats, Japan) in one square inch.

How do I convert square inches to jō (tatami mats, Japan)?

Multiply the number of square inches by 0.000398247. For example, 10 square inches equal 0.00398247 jō (tatami mats, Japan).

How many square inches are in one jō (tatami mat, Japan)?

One jō (tatami mat, Japan) equals 2,511.01 square inches.

What people are saying
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Anonymous · 04 Oct 2026