Pyeong to Square Meters (평 → m²) — Korean Apartment Size
Unit ConverterThe pyeong is a traditional Korean area unit still used for real estate; 1 pyeong equals 400/121 m², about 3.3058 m².
What is it
The pyeong derives from the area of a square with 6-ja (about 1.818 m) sides — exactly 400/121 ≈ 3.3058 m². Korea legally measures area in square meters, yet apartment listings still quote sizes in pyeong by custom. Official apartment sizes are stated as exclusive-use area in m², while marketed "pyeong types" usually refer to gross supply area, so the two numbers differ for the same unit.
How to use
- 1Enter the pyeong (평) value.
- 2See the square meter (m²) result instantly.
- 3Switch units to convert again if needed.
Reference
| pyeong | m² |
|---|---|
| 1 | 3.31 |
| 10 | 33.06 |
| 15 | 49.59 |
| 18 | 59.5 |
| 25 | 82.64 |
| 32 | 105.79 |
| 34 | 112.4 |
Sources & standards
- NIST Guide to the SI: conversion factors - NIST
- SI Brochure: The International System of Units - BIPM
- Housing measurement guide: pyeong and square metres - Institute for Basic Science
FAQ
How many square meters is one pyeong?
One pyeong is 400/121 m², about 3.3058 m² — roughly 3.3 m².
How big is a 34-pyeong apartment?
About 112.4 m² of supply area. Its exclusive-use area is typically 84 m² (about 25.4 pyeong).
Is pyeong an official unit?
No. Korea officially uses square meters; pyeong remains a customary unit in real estate conversation and listings.
Is my input sent to a server?
No. Every conversion runs instantly inside your browser; the values you enter are never sent to a server or stored.