Convert Pyeong to Square Foot
Convert pyeongs to square feet instantly. 1 pyeong = 35.5833350556 square foot — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square Foot to Pyeong converter for the reverse conversion.
Units explained
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.
Square Foot
A square foot is an imperial unit of area equal to exactly 0.09290304 m². It is the dominant unit for real estate area measurement in the United States and is widely used in India for residential property listings.
Derived by squaring the foot. The foot was standardized to exactly 0.3048 m via the 1959 International Yard and Pound Agreement.
Square feet are the standard unit for US real estate floor area, HVAC capacity ratings (BTU per ft²), commercial leasing, and construction. In India, square feet is the dominant unit for residential property advertisements alongside traditional regional units.
Foot dates to ancient civilizations; modern exact value standardized in 1959.
Pyeong to Square Foot conversion formula
The relationship between pyeongs and square feet:
To convert pyeongs to square feet, multiply the value in pyeongs by 35.5833350556. To reverse, multiply square feet by 0.0281030431.
How to use this converter
Type a value into the calculator. The result in square feet updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Square Foot to Pyeong converter for the reverse direction.
Step-by-step: convert pyeongs to square feet
- Write down the value in pyeongs (pyeong).
- Multiply that value by the factor 35.5833350556.
- The product is the equivalent value in square feet (ft²).
- To reverse, multiply the square foot value by 0.0281030431.
Worked examples
Example 1 — Convert 1 pyeong to ft²:
1 × 35.5833350556 = 35.5833350556 ft²
Example 2 — Convert 100 pyeong to ft²:
100 × 35.5833350556 = 3558.3335055559 ft²
Real-world example — Pet and accessory dimensions
A 3-pyeong dog leash equals a tidy round value in square feet. Pet-supply shopping frequently mixes the two units across product specifications.
3 pyeong × 35.5833350556 = 106.7500051667 ft²
Real-world example — Fabric and tailoring
One pyeong of fabric converts to a value in square feet commonly used for seam allowances. Garment patterns frequently switch between the two units on a single instruction sheet.
1 pyeong × 35.5833350556 = 35.5833350556 ft²
Real-world example — Body height conversion (reverse direction)
You measure 1.75 pyeongs tall and need to fill in a gym membership form or medical record that asks for height in square feet. This is the most-used everyday length conversion in metric-using countries.
1.75 pyeong × 35.5833350556 = 62.2708363472 ft²
Pyeong to Square Foot conversion table
Standard reference values for converting pyeongs to square feet:
| Pyeong [pyeong] | Square Foot [ft²] |
|---|---|
| 0.01 | 0.3558333506 |
| 0.1 | 3.5583335056 |
| 1 | 35.5833350556 |
| 2 | 71.1666701111 |
| 3 | 106.7500051667 |
| 4 | 142.3333402222 |
| 5 | 177.9166752778 |
| 10 | 355.8333505556 |
| 20 | 711.6667011112 |
| 30 | 1067.5000516668 |
| 40 | 1423.3334022224 |
| 50 | 1779.1667527779 |
| 100 | 3558.3335055559 |
| 500 | 17791.6675277795 |
| 1000 | 35583.335055559 |
Frequently asked questions
How many square feet is 1 pyeong?
How do I convert pyeongs to square feet?
How do I convert square feet back to pyeongs?
How many square feet is 100 pyeongs?
Popular area unit conversions
Convert Pyeong to other area units
Show all Pyeong conversions
Metric / SI (5 units)
Imperial / US Customary (3 units)
Sources & references
Conversion factor (1 pyeong = 35.5833350556 ft²) 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.