// Surveyor Tools
How many acres are in a rai?
1 rai = 0.3954 acre
1 acre = 2.5293 rai
The rai is the land unit of Thailand: exactly 1,600 m² (40 m × 40 m), or 0.3954 acre. One rai is 4 ngan or 400 square wah.
Quick conversion
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Conversion table
| Rai | Acre |
|---|---|
| 1 | 0.3954 |
| 2 | 0.7907 |
| 3 | 1.1861 |
| 4 | 1.5815 |
| 5 | 1.9768 |
| 10 | 3.9537 |
| 20 | 7.9074 |
| 50 | 19.7684 |
| 100 | 39.5369 |
| Acre | Rai |
|---|---|
| 1 | 2.5293 |
| 2 | 5.0586 |
| 3 | 7.5879 |
| 4 | 10.1171 |
| 5 | 12.6464 |
| 10 | 25.2929 |
| 20 | 50.5857 |
| 50 | 126.46 |
| 100 | 252.93 |
How big each land unit is
| Unit | In m² | In hectares | Where it is used |
|---|---|---|---|
| Rai | 1,600 | 0.16 | Thailand |
| Acre | 4,046.86 | 0.4047 | USA, UK, Canada, India, Pakistan, Australia |
FAQ
How many rai are in a hectare?
6.25 rai.
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