Convert Pyeong to Square Kilometer
Convert pyeongs to square kilometers instantly. 1 pyeong = 3.3058e-6 square kilometer — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square Kilometer 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 Kilometer
A square kilometer is a metric unit of area equal to 1,000,000 m² (one million square meters), or 100 hectares. It is used for measuring large land areas, regional geography, and country-scale statistics.
Derived by squaring the kilometer (1000 m). The kilo- prefix comes from the Greek 'chilioi' (thousand).
Square kilometers express the area of cities, districts, lakes, forests, and entire countries. India's total area is approximately 3,287,263 km². 1 km² equals 100 hectares or about 247.105 acres.
Kilometer has been part of the metric system since 1795.
Pyeong to Square Kilometer conversion formula
The relationship between pyeongs and square kilometers:
To convert pyeongs to square kilometers, multiply the value in pyeongs by 3.3058e-6. To reverse, multiply square kilometers by 302498.6387561256.
How to use this converter
Type a value into the calculator. The result in square kilometers 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 Kilometer to Pyeong converter for the reverse direction.
Step-by-step: convert pyeongs to square kilometers
- Write down the value in pyeongs (pyeong).
- Multiply that value by the factor 3.3058e-6.
- The product is the equivalent value in square kilometers (km²).
- To reverse, multiply the square kilometer value by 302498.6387561256.
Worked examples
Example 1 — Convert 1 pyeong to km²:
1 × 3.3058e-6 = 3.3058e-6 km²
Example 2 — Convert 100 pyeong to km²:
100 × 3.3058e-6 = 0.00033058 km²
Real-world example — Reference scenario in case of fallback
Conversion between human-scale length units is the everyday workflow of architecture, athletics, and apparel design — three of the most common contexts that span metric and imperial systems.
1 pyeong × 3.3058e-6 = 3.3058e-6 km²
Real-world example — Adult height conversion
A 1.8-pyeong-tall person measures a value in square kilometers that converts the height to the unit favoured by American forms, schools, or driver's licences. This is daily routine for anyone living between metric and imperial systems.
1.8 pyeong × 3.3058e-6 = 5.95044e-6 km²
Real-world example — Fabric purchase length
Two pyeongs of fabric equals a value in square kilometers essential for tailors and textile buyers sourcing material from international suppliers that quote in different units.
2 pyeong × 3.3058e-6 = 6.6116e-6 km²
Pyeong to Square Kilometer conversion table
Standard reference values for converting pyeongs to square kilometers:
| Pyeong [pyeong] | Square Kilometer [km²] |
|---|---|
| 0.01 | 3.3058e-8 |
| 0.1 | 3.3058e-7 |
| 1 | 3.3058e-6 |
| 2 | 6.6116e-6 |
| 3 | 9.9174e-6 |
| 4 | 1.32232e-5 |
| 5 | 1.6529e-5 |
| 10 | 3.3058e-5 |
| 20 | 6.6116e-5 |
| 30 | 9.9174e-5 |
| 40 | 0.000132232 |
| 50 | 0.00016529 |
| 100 | 0.00033058 |
| 500 | 0.0016529 |
| 1000 | 0.0033058 |
Frequently asked questions
How many square kilometers is 1 pyeong?
How do I convert pyeongs to square kilometers?
How do I convert square kilometers back to pyeongs?
How many square kilometers 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 = 3.3058e-6 km²) 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.