Pyeong ↔ m² Converter
Convert Korean pyeong to square metres and back exactly. Built on 1 pyeong = 400/121 m² (about 3.305785 m²), with one-tap chips for 18/24/32/34/45 pyeong and 59/74/84 m².
How to use
- Pick a direction at the top — pyeong → m² or m² → pyeong.
- Type the area and the value in the other unit appears instantly. Decimals are fine.
- Tap 18 / 24 / 32 / 34 / 45 pyeong or 59 / 74 / 84 m² to convert a common Korean apartment size in one step.
- The copy button puts the conversion and its factor on your clipboard.
FAQ
How big is one pyeong?
Exactly 400/121 m², which is about 3.305785 m². One square metre is 121/400 of a pyeong, or 0.3025 pyeong.
Why 400/121?
One pyeong is 6 Korean cheok by 6 cheok and one cheok is defined as 10/33 m, so (6 × 10/33)² = 400/121 m². That is the factor listed in the table of the Enforcement Decree of the Measurement Act.
How many pyeong is 84 m²?
84 m² ÷ (400/121) = 25.41 pyeong. The 34-pyeong figure used in apartment sales is based on supply area, which adds shared space to the 84 m² exclusive area.
Which area do apartment pyeong figures use?
By convention pyeong is quoted from the exclusive area, but headline numbers such as the 34-pyeong type usually come from the supply area, so check both in the contract.
Should I use m² or pyeong?
The legal unit of area in Korea is the square metre. Contracts, property registers and building ledgers all use m², so treat pyeong as a reference figure only.
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