Convert Chō to Tsubo
Convert chōs to tsubos instantly. 1 chō = 2999.9879000544 tsubo — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Tsubo to Chō converter for the reverse conversion.
Units explained
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
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 to Tsubo conversion formula
The relationship between chōs and tsubos:
To convert chōs to tsubos, multiply the value in chōs by 2999.9879000544. To reverse, multiply tsubos by 0.0003333347.
How to use this converter
Type a value into the calculator. The result in tsubos updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Tsubo to Chō converter for the reverse direction.
Step-by-step: convert chōs to tsubos
- Write down the value in chōs (chō).
- Multiply that value by the factor 2999.9879000544.
- The product is the equivalent value in tsubos (tsubo).
- To reverse, multiply the tsubo value by 0.0003333347.
Worked examples
Example 1 — Convert 1 chō to tsubo:
1 × 2999.9879000544 = 2999.9879000544 tsubo
Example 2 — Convert 100 chō to tsubo:
100 × 2999.9879000544 = 299998.790005445 tsubo
Real-world example — Lap pacing and route segmentation
Translating a chō-scale distance into tsubos is how runners, cyclists, and route planners convert top-line totals into the working segments they actually pace and execute.
1 chō × 2999.9879000544 = 2999.9879000544 tsubo
Real-world example — Track athletics distances
A 1-chō running track equals one thousand tsubos. Track athletes' lap pacing converts the lap (often 400 of the smaller unit) into the fractional race distance whenever a coach reviews splits.
1 chō × 2999.9879000544 = 2999.9879000544 tsubo
Real-world example — Geographic to human-scale conversion
One chō converts to a precise number of tsubos — the everyday arithmetic for navigation systems, race-distance calculations, and any context where bigger geographic units must be related to the smaller working units.
1 chō × 2999.9879000544 = 2999.9879000544 tsubo
Chō to Tsubo conversion table
Standard reference values for converting chōs to tsubos:
| Chō [chō] | Tsubo [tsubo] |
|---|---|
| 0.01 | 29.9998790005 |
| 0.1 | 299.9987900054 |
| 1 | 2999.9879000544 |
| 2 | 5999.9758001089 |
| 3 | 8999.9637001633 |
| 4 | 11999.9516002178 |
| 5 | 14999.9395002722 |
| 10 | 29999.8790005445 |
| 20 | 59999.758001089 |
| 30 | 89999.6370016335 |
| 40 | 119999.516002178 |
| 50 | 149999.3950027225 |
| 100 | 299998.790005445 |
| 500 | 1499993.9500272248 |
| 1000 | 2999987.9000544497 |
Frequently asked questions
How many tsubos is 1 chō?
How do I convert chōs to tsubos?
How do I convert tsubos back to chōs?
How many tsubos is 100 chōs?
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Sources & references
Conversion factor (1 chō = 2999.9879000544 tsubo) 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.