Convert Chō to Feddan
Convert chōs to feddans instantly. 1 chō = 2.3608096495 feddan — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Feddan 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.
Feddan
A feddan is an Egyptian unit of land area equal to approximately 4200.83 m² (about 1.038 acres). Used in Egypt, Sudan, Syria, and Oman.
Originated as an Egyptian agricultural unit. Standardized at 4200.83 m² in modern Egyptian law (specifically, 333.33 qasaba squared).
Feddans are the primary unit for agricultural land in Egypt and several Arab countries. The conversion to hectares (1 feddan ≈ 0.42 hectare) is widely known regionally.
Standardized in modern Egyptian land law.
Chō to Feddan conversion formula
The relationship between chōs and feddans:
To convert chōs to feddans, multiply the value in chōs by 2.3608096495. To reverse, multiply feddans by 0.423583494.
How to use this converter
Type a value into the calculator. The result in feddans updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Feddan to Chō converter for the reverse direction.
Step-by-step: convert chōs to feddans
- Write down the value in chōs (chō).
- Multiply that value by the factor 2.3608096495.
- The product is the equivalent value in feddans (feddan).
- To reverse, multiply the feddan value by 0.423583494.
Worked examples
Example 1 — Convert 1 chō to feddan:
1 × 2.3608096495 = 2.3608096495 feddan
Example 2 — Convert 100 chō to feddan:
100 × 2.3608096495 = 236.0809649522 feddan
Real-world example — Road-sign distances across systems
A 100-chō road sign converts cleanly into feddans — exactly the conversion drivers planning trips abroad rely on when reading road signs in a different measurement system.
100 chō × 2.3608096495 = 236.0809649522 feddan
Real-world example — Endurance race distances
A 50-chō cycling or running race converts to a recognizable distance in feddans. Endurance athletes coming from a different measurement system use this conversion to compare training plans across regions.
50 chō × 2.3608096495 = 118.0404824761 feddan
Real-world example — Maritime exclusion zone
A 200-chō exclusion zone (a common maritime boundary) converts to a different value in feddans that's useful when describing the same zone in everyday land-distance units.
200 chō × 2.3608096495 = 472.1619299043 feddan
Chō to Feddan conversion table
Standard reference values for converting chōs to feddans:
| Chō [chō] | Feddan [feddan] |
|---|---|
| 0.01 | 0.0236080965 |
| 0.1 | 0.236080965 |
| 1 | 2.3608096495 |
| 2 | 4.721619299 |
| 3 | 7.0824289486 |
| 4 | 9.4432385981 |
| 5 | 11.8040482476 |
| 10 | 23.6080964952 |
| 20 | 47.2161929904 |
| 30 | 70.8242894856 |
| 40 | 94.4323859809 |
| 50 | 118.0404824761 |
| 100 | 236.0809649522 |
| 500 | 1180.4048247608 |
| 1000 | 2360.8096495216 |
Frequently asked questions
How many feddans is 1 chō?
How do I convert chōs to feddans?
How do I convert feddans back to chōs?
How many feddans is 100 chōs?
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Imperial / US Customary (3 units)
Sources & references
Conversion factor (1 chō = 2.3608096495 feddan) 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 Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.