Area unit conversions
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When you change the area unit, room areas are converted with the values below. To choose a unit, see Change area and length units.
Compare area conversion values
| Unit | Square meters per unit | Decimal places shown |
|---|---|---|
| m² (square meters) | 1 | 1 |
| ft² (square feet) | About 0.0929 (0.3048 m squared) | 1 |
| yd² (square yards) | About 0.8361 (0.9144 m squared) | 1 |
| Tsubo | 400 ÷ 121 (about 3.3058) | 2 |
| Jo (tatami mats) | 1.62 | 1 |
| Pyeong | 400 ÷ 121 (about 3.3058) | 2 |
Tsubo and pyeong use the same conversion value. Only their names and symbols differ.
Jo uses 1.62 m² per tatami mat, as specified by Japan’s fair competition rules for real estate advertising. The displayed number of tatami mats is the room’s area divided by 1.62. It isn’t the number of physical mats that fit in the room.
Convert lengths
Lengths are displayed in meters or feet. One foot is 0.3048 m, and one inch is 0.0254 m. Displays such as room tiles round to the nearest inch when using feet and inches.
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