Short answer: 1 pyeong is about 3.3058 m² (exactly 400/121 m²), and 1 m² is 0.3025 pyeong. Type a number below to convert pyeong, square meters and square feet instantly. The same tool also converts Korean weights (geun, don), feet and inches, temperatures and shoe sizes.
Korean apartment sizes in pyeong
| Floor area | In pyeong | Usually called (supply area) |
|---|---|---|
| 59 m² | 17.85 | about a 25-pyeong type |
| 74 m² | 22.39 | about a 30-pyeong type |
| 84 m² | 25.41 | about a 34-pyeong type |
| 114 m² | 34.49 | about a 43-pyeong type |
Korean listings often describe a flat as a “34-pyeong type”. That figure counts the supply area, which adds shared spaces such as stairs and corridors to the private floor area, so it is larger than the floor area converted to pyeong. Shared areas vary by building, so use the supply area from the official listing for an exact figure.
Geun and don: Korean weights you will hear at markets and gold shops
- 1 geun (근) of meat or herbal medicine = 600 g
- 1 geun of fruit or vegetables = 375 g
- 1 don (돈) of gold = 3.75 g; 1 nyang (냥) = 10 don = 37.5 g
- For comparison, a jin (斤) in mainland China is 500 g and a catty (台斤) in Taiwan is 600 g
The two meanings of geun follow the Standard Korean Language Dictionary of the National Institute of Korean Language. Tap “1 geun of meat” in the Weight tab and you will see that 600 g is 1.6 geun of produce, or 160 don.
Korean shoe sizes in mm, to US, UK and EU
Korean shoe sizes are written in millimetres, such as 250. The Shoe size tab copies the Korea (mm), US, UK and EU values from Nike Korea’s official size charts (checked 16 October 2026). The same US 8 is 250 mm on the women’s chart but 260 mm on the men’s chart. Other brands can differ, so check the brand’s own chart before you buy.
What was checked
On 16 October 2026 Sitecurio entered 1, 0.5, 84 and 1234.5 for every pair of units in the Area, Weight, Length and Temperature tabs, in the Korean, English and Chinese versions, and compared all 1,688 results with exact fraction arithmetic. None differed by more than the display rounding. For example, 84 m² shows as 25.41 pyeong, 30 pyeong as 99.1736 m², 100 pyeong as 330.58 m² and 170 cm as 5′ 6.9″. Sitecurio also checked the shoe table cell by cell against Nike Korea’s men’s and women’s charts.
FAQ
Isn’t 1 pyeong just 3.3 m²?
3.3 is a rounded figure. A pyeong is a square of six ja (1 ja = 10/33 m), which makes it 400/121 = 3.30578… m². The gap grows with size: 100 pyeong is 330.58 m², not 330 m².
Is pyeong still used in Korea?
Official documents have used square meters since 2007, when legal units of measurement became mandatory. In everyday conversation and many listings, people still talk about pyeong, so it helps to know both.
Can I convert height and body weight?
Yes. Use the Length & height tab for cm to feet and inches, and the Weight tab for kg to pounds. Feet are also shown as feet and inches, such as 5′ 6.9″.
Is anything I type stored?
No. Everything is calculated in your browser and nothing is sent to a server.
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