Convert Tsubo to Chō
Convert tsubos to chōs instantly. 1 tsubo = 0.0003333347 chō — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Chō to Tsubo converter for the reverse conversion.
Units explained
Tsubo
A tsubo is a Japanese unit of area equal to approximately 3.3058 m² (about 35.58 square feet). It is functionally identical to the Korean pyeong.
Defined as a 6-by-6 shaku square; the shaku is the traditional Japanese foot. Standardized as 400/121 m² in modern Japanese law.
Tsubos remain in widespread use in Japanese real estate, particularly for residential apartments and small commercial spaces. Property listings often cite both tsubo and square meters.
Traditional Japanese unit; legally retained in Japan for real estate.
Chō
A chō is a Japanese unit of large-scale area equal to approximately 9917.36 m² (about 0.991 hectare or 2.45 acres). It equals 3,000 tsubo.
Traditional Japanese land area unit, used historically for rice paddies and large estates.
Chōs appear in Japanese agricultural records and historical land documents. Modern usage favors hectares for new transactions but legacy records remain.
Traditional Japanese unit; standardized via the tsubo definition.
Tsubo to Chō conversion formula
The relationship between tsubos and chōs:
To convert tsubos to chōs, multiply the value in tsubos by 0.0003333347. To reverse, multiply chōs by 2999.9879000545.
How to use this converter
Type a value into the calculator. The result in chōs updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Chō to Tsubo converter for the reverse direction.
Step-by-step: convert tsubos to chōs
- Write down the value in tsubos (tsubo).
- Multiply that value by the factor 0.0003333347.
- The product is the equivalent value in chōs (chō).
- To reverse, multiply the chō value by 2999.9879000545.
Worked examples
Example 1 — Convert 1 tsubo to chō:
1 × 0.0003333347 = 0.0003333347 chō
Example 2 — Convert 100 tsubo to chō:
100 × 0.0003333347 = 0.0333334678 chō
Real-world example — Imperial mile arithmetic
5,280 tsubos equals exactly one chō. American hikers tracking elevation gain in the smaller unit but trail length in the larger one use this constant every time they read a topographic map.
5280 tsubo × 0.0003333347 = 1.7600070987 chō
Real-world example — Imperial yard-to-mile scale
1,760 tsubos equals exactly one chō. American athletes and surveyors use this conversion to translate distances quoted in the smaller imperial unit into recognizable fractions of the larger geographic one.
1760 tsubo × 0.0003333347 = 0.5866690329 chō
Real-world example — Metric distance scale-up
One thousand tsubos equals one chō — the running distance for a 1K race or the standard metric kilometre-scale step. The simple thousand-fold conversion is the most-used metric distance translation.
1000 tsubo × 0.0003333347 = 0.3333346778 chō
Tsubo to Chō conversion table
Standard reference values for converting tsubos to chōs:
| Tsubo [tsubo] | Chō [chō] |
|---|---|
| 0.01 | 3.333347e-6 |
| 0.1 | 3.333347e-5 |
| 1 | 0.0003333347 |
| 2 | 0.0006666694 |
| 3 | 0.001000004 |
| 4 | 0.0013333387 |
| 5 | 0.0016666734 |
| 10 | 0.0033333468 |
| 20 | 0.0066666936 |
| 30 | 0.0100000403 |
| 40 | 0.0133333871 |
| 50 | 0.0166667339 |
| 100 | 0.0333334678 |
| 500 | 0.1666673389 |
| 1000 | 0.3333346778 |
Frequently asked questions
How many chōs is 1 tsubo?
How do I convert tsubos to chōs?
How do I convert chōs back to tsubos?
How many chōs is 100 tsubos?
Popular area unit conversions
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Metric / SI (5 units)
Imperial / US Customary (3 units)
Sources & references
Conversion factor (1 tsubo = 0.0003333347 chō) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.