Convert Chō to Pyeong
Convert chōs to pyeongs instantly. 1 chō = 2999.9879000544 pyeong — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Pyeong 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.
Pyeong
A pyeong is a Korean unit of area equal to approximately 3.3058 m² (about 35.58 square feet).
Originated as a traditional East Asian land unit. Korean usage standardizes pyeong at 400/121 m² ≈ 3.3058 m². Defined as the area of a 6-by-6 Korean foot (cheok) square.
Pyeong is the primary unit for residential real estate in South Korea. Although the government tried to phase pyeong out in favor of square meters from 2007, the unit remains in widespread popular use, particularly for apartment sizes.
Traditional East Asian unit; remains in widespread Korean use despite government metric campaigns.
Chō to Pyeong conversion formula
The relationship between chōs and pyeongs:
To convert chōs to pyeongs, multiply the value in chōs by 2999.9879000544. To reverse, multiply pyeongs by 0.0003333347.
How to use this converter
Type a value into the calculator. The result in pyeongs updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Pyeong to Chō converter for the reverse direction.
Step-by-step: convert chōs to pyeongs
- Write down the value in chōs (chō).
- Multiply that value by the factor 2999.9879000544.
- The product is the equivalent value in pyeongs (pyeong).
- To reverse, multiply the pyeong value by 0.0003333347.
Worked examples
Example 1 — Convert 1 chō to pyeong:
1 × 2999.9879000544 = 2999.9879000544 pyeong
Example 2 — Convert 100 chō to pyeong:
100 × 2999.9879000544 = 299998.790005445 pyeong
Real-world example — Track athletics distances
A 1-chō running track equals one thousand pyeongs. 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 pyeong
Real-world example — Geographic to human-scale conversion
One chō converts to a precise number of pyeongs — 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 pyeong
Real-world example — Lap pacing and route segmentation
Translating a chō-scale distance into pyeongs 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 pyeong
Chō to Pyeong conversion table
Standard reference values for converting chōs to pyeongs:
| Chō [chō] | Pyeong [pyeong] |
|---|---|
| 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 pyeongs is 1 chō?
How do I convert chōs to pyeongs?
How do I convert pyeongs back to chōs?
How many pyeongs is 100 chōs?
Popular area unit conversions
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Metric / SI (5 units)
Imperial / US Customary (3 units)
Sources & references
Conversion factor (1 chō = 2999.9879000544 pyeong) 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.