jō to m² Converter

Convert jō to square meters instantly.

Free online area converter with accurate results and clear explanations.

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How This Tool Works

This converter uses the common Japanese room-area approximation: 1 jō = 1.65 square meters.

Enter an area in jō and the tool multiplies it by 1.65 to show the equivalent in square meters. Use the swap control to convert square meters back to jō.

  • Input: jō value, such as 6 jō.
  • Formula: square meters = jō x 1.65.
  • Output: Equivalent area in square meters.

Why This Matters

Jō is commonly used in Japanese real estate and room-size descriptions. Converting it to square meters makes listings easier to compare with metric floor plans, rental documents, and renovation estimates.

Exact tatami and room-size conventions can vary by region, so confirm the listed square-meter area for contracts or final measurements.

Common Mistakes to Avoid

  • Do not treat jō as one square meter: One jō is typically larger than one square meter.
  • Check regional conventions: Tatami-related measurements can vary slightly across Japan.
  • Keep units explicit: Label whether a room size is in jō or square meters before comparing listings.

Frequently Asked Questions

Common questions about the jō to m² Converter

A jo equals one tatami mat (about 1.65 sq m). It's used to measure Japanese room sizes.
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Sources & References

International System of Units (SI): area

Area is measured in the square metre (m²); 1 acre = 4046.8726 m². Conversions between SI and other units use exact, internationally agreed factors maintained by NIST.
→Source: NIST — International System of Units (SI)

International System of Units (SI)

Authoritative definitions for area, from the BIPM SI Brochure (9th edition), the defining reference for the SI.
→Source: BIPM — SI Brochure (9th ed.)

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