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Quick comparison table
Tap any row to send that value to the converter above.
| rai | square wah | rai-ngan-wah |
|---|---|---|
| 1 | 400 | 1-0-0 |
| 2 | 800 | 2-0-0 |
| 5 | 2,000 | 5-0-0 |
| 10 | 4,000 | 10-0-0 |
| 50 | 20,000 | 50-0-0 |
| 100 | 40,000 | 100-0-0 |
How the calculation works
Rai converts to square wah by multiplying by 400, since one rai is 4 ngan and one ngan is 100 square wah. The figure matters most when a large holding recorded in rai needs a price comparison against smaller plots in the same neighbourhood, which the local market typically prices per square wah.
Example: a 3-rai plot equals 1,200 square wah. If a neighbouring 100-wah plot is listed at 8 million baht, the per-wah price is immediate — and now directly comparable to the 3-rai plot in the same unit.
See also: Square wah → square metres, Ngan → square metres
in-content · min-height 250 px
Frequently asked questions
How many square wah is one rai?
One rai is 400 square wah — 1 rai equals 4 ngan, and 1 ngan equals 100 square wah.
Why do some listings use rai and others use square wah?
Large plots — farmland, orchards, undeveloped tracts — are usually listed in rai. Smaller urban or subdivided lots are usually listed in square wah, a unit closer to their actual size.
How many square wah is 0.5 rai?
0.5 rai equals 200 square wah.