How pyeong is converted
One pyeong is the area of a square 6 ja (尺, a traditional unit of length) on each side. Since 1 ja is taken as 10/33 m, 1 pyeong is exactly 400/121 ㎡, or about 3.3058 ㎡.
㎡ = pyeong × 3.3058 · pyeong = ㎡ × 0.3025
- 1 ㎡ = 0.3025 pyeong (exact)
- 1 ft² (square foot) = 0.09290304 ㎡
- 1 jō (one tatami mat) = 1.62 ㎡ (Japanese real estate advertising standard)
Pyeong to ㎡ chart
| Pyeong | Square meters (㎡) | Square feet (ft²) |
|---|---|---|
| 1 py | 3.31㎡ | 36ft² |
| 5 py | 16.53㎡ | 178ft² |
| 10 py | 33.06㎡ | 356ft² |
| 15 py | 49.59㎡ | 534ft² |
| 18 py | 59.50㎡ | 640ft² |
| 20 py | 66.12㎡ | 712ft² |
| 24 py | 79.34㎡ | 854ft² |
| 25 py | 82.64㎡ | 890ft² |
| 30 py | 99.17㎡ | 1,067ft² |
| 32 py | 105.79㎡ | 1,139ft² |
| 34 py | 112.40㎡ | 1,210ft² |
| 40 py | 132.23㎡ | 1,423ft² |
| 45 py | 148.76㎡ | 1,601ft² |
| 50 py | 165.29㎡ | 1,779ft² |
| 60 py | 198.35㎡ | 2,135ft² |
Korean apartment sizes in pyeong
Exclusive areas that often appear in Korean apartment sales notices, converted to pyeong.
| Exclusive area | Pyeong | Square feet (ft²) |
|---|---|---|
| 33㎡ | 10.0 py | 355ft² |
| 39㎡ | 11.8 py | 420ft² |
| 49㎡ | 14.8 py | 527ft² |
| 59㎡ | 17.8 py | 635ft² |
| 74㎡ | 22.4 py | 797ft² |
| 84㎡ | 25.4 py | 904ft² |
| 101㎡ | 30.6 py | 1,087ft² |
| 114㎡ | 34.5 py | 1,227ft² |
| 135㎡ | 40.8 py | 1,453ft² |
| 165㎡ | 49.9 py | 1,776ft² |
Exclusive, supply and contract area
- Exclusive area (전용면적): the space inside your front door used only by your household (rooms, living room, kitchen, bathrooms)
- Supply area (공급면적): exclusive area + residential shared area (stairs, hallways, elevators, etc.)
- Contract area (계약면적): supply area + other shared area (management office, parking, community facilities, etc.)
- Service area (서비스면적): space such as balconies that isn't counted in any of the above
Sizes quoted as "XX pyeong" are usually based on supply area, so they're larger than the actual space inside the home. The share of common area differs by complex, so check the ㎡ figure in the sales notice or the building register for the exact size.
Standards and sources
- 1 pyeong = 400/121 ㎡ (based on 1 ja = 10/33 m)
- 1 ft² = 0.09290304 ㎡ (international foot: 1 ft = 0.3048 m)
- 1 jō = 1.62 ㎡ (advertising standard in the enforcement rules of Japan's Fair Competition Code for Real Estate Representation, 不動産の表示に関する公正競争規約)
Last reviewed October 7, 2026
Frequently asked questions
How many square meters is 1 pyeong?
1 pyeong is exactly 400/121 ㎡, about 3.3058 ㎡. In reverse, 1 ㎡ is 0.3025 pyeong.
How many pyeong is an 84 ㎡ apartment?
An exclusive area of 84 ㎡ is about 25.4 pyeong. Ads that call it a "30-pyeong-class" home use the supply area, which adds shared space, so check each complex's sales notice for the exact supply area.
How many pyeong is 59 ㎡?
An exclusive area of 59 ㎡ is about 17.8 pyeong.
Do "pyeong-hyeong" and "pyeong-su" mean the same thing?
There's no fixed rule, but "pyeong-hyeong" (평형) is usually used for size based on supply area. To know the actual space inside the home, check the exclusive area in ㎡.
How many square meters is one tatami mat (jō)?
It varies by region and building, but Japanese real estate advertising rules require one mat to be shown as at least 1.62 ㎡, so this calculator uses 1.62 ㎡.