Convert between Japan and China property area measurements
Quick fill
Japan lists property area as 'exclusive area' (専有面積), measuring only the livable space within wall centers — no shared spaces included. China lists 'construction area' (建筑面积), which includes a share of common spaces like hallways, elevators, and lobbies (called 公摊, typically 20-30%). So Japan's 60m² equals roughly 80m² in Chinese listings, but the actual living space is the same.
The shared area ratio varies by building type. High-rise apartments: 25-30%, low-rise: 15-20%.
| Common layouts | Japan (m²) | China (m²) |
|---|---|---|
| 1K | 25 | 33 |
| 1LDK | 40 | 53 |
| 2LDK | 60 | 80 |
| 3LDK | 75 | 100 |
| 4LDK | 95 | 127 |
