Convert Tan to Pyeong
Convert tan to pyeongs instantly. 1 tan = 299.9987900054 pyeong — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Pyeong to Tan converter for the reverse conversion.
Units explained
Tan
A tan is a Japanese unit of area equal to approximately 991.74 m². It equals 300 tsubo, or 1/10 chō.
Traditional Japanese agricultural unit. The tan was the standard rice paddy size in pre-modern Japan.
Tan appears in Japanese rural property records and historical land descriptions. Used alongside chō and tsubo in Japanese agricultural documentation.
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.
Tan to Pyeong conversion formula
The relationship between tan and pyeongs:
To convert tan to pyeongs, multiply the value in tan by 299.9987900054. To reverse, multiply pyeongs by 0.0033333468.
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 Tan converter for the reverse direction.
Step-by-step: convert tan to pyeongs
- Write down the value in tan (tan).
- Multiply that value by the factor 299.9987900054.
- The product is the equivalent value in pyeongs (pyeong).
- To reverse, multiply the pyeong value by 0.0033333468.
Worked examples
Example 1 — Convert 1 tan to pyeong:
1 × 299.9987900054 = 299.9987900054 pyeong
Example 2 — Convert 100 tan to pyeong:
100 × 299.9987900054 = 29999.8790005445 pyeong
Tan to Pyeong conversion table
Standard reference values for converting tan to pyeongs:
| Tan [tan] | Pyeong [pyeong] |
|---|---|
| 0.01 | 2.9999879001 |
| 0.1 | 29.9998790005 |
| 1 | 299.9987900054 |
| 2 | 599.9975800109 |
| 3 | 899.9963700163 |
| 4 | 1199.9951600218 |
| 5 | 1499.9939500272 |
| 10 | 2999.9879000544 |
| 20 | 5999.9758001089 |
| 30 | 8999.9637001633 |
| 40 | 11999.9516002178 |
| 50 | 14999.9395002722 |
| 100 | 29999.8790005445 |
| 500 | 149999.3950027225 |
| 1000 | 299998.790005445 |
Frequently asked questions
How many pyeongs is 1 tan?
How do I convert tan to pyeongs?
How do I convert pyeongs back to tan?
How many pyeongs is 100 tan?
Popular area unit conversions
Convert Tan to other area units
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Metric / SI (5 units)
Imperial / US Customary (3 units)
Sources & references
Conversion factor (1 tan = 299.9987900054 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.