Pyeong ↔ Square Meter

Convert between the Korean pyeong (평) and the metric square meter (m²) used internationally. 1 pyeong equals exactly 400/121 m² (≈ 3.3058 m²). Type into either field and the other updates automatically. Common Korean apartment sizes (24평, 33평, 45평…) are listed below as quick presets, along with notes on Korean real-estate area conventions.

1. Type a number on the left to see the equivalent in m² on the right.
2. Type a number on the right to convert m² back into pyeong.
3. Tap a preset chip to jump to a standard Korean apartment size like 24평 or 33평.

• What is exactly 1 pyeong in m²?

  The legal conversion is 1 pyeong = 400/121 m² ≈ 3.3057851 m². In everyday use it's rounded to 3.3058 or 3.3; this tool uses the exact 400/121 ratio.

• What's the difference between 전용 / 공급 / 계약 area?

  전용면적 is the floor area inside your own unit. 공급면적 (= 분양면적) adds residential shared space like corridors and stairs. 계약면적 also folds in other shared facilities (underground parking, management offices). Listings labeled “24평형” usually mean the 공급면적.

• Is the Korean pyeong the same as the Japanese tsubo (坪)?

  Yes — same unit, same value (≈ 3.3058 m²). The two countries just use it in different contexts: Korean apartment sizes vs Japanese land/rent measurements.

• Why does Korea still use pyeong if m² is the legal unit?

  Listings have been required to use m² since 2007, but pyeong remains the more intuitive unit in conversation and ads. That's why most tools (and this one) show both side-by-side.