Rai to Square Wah Converter
Convert Rai to Square Wah instantly for Thai land listings, title deeds and plot-size comparisons.
Calculator
Conversion formula
1 Rai = 400 Square Wah
Examples
200 Square Wah
400 Square Wah
1,000 Square Wah
4,000 Square Wah
How to use this converter
Enter the amount of Rai above. The result in Square Wah updates instantly in your browser. The calculator works on mobile and desktop without sending your conversion input to a ThailandCalc application database.
For several Thai and international land units at once, return to the full ThailandCalc land-area converter.
Why convert Rai to Square Wah?
Square Wah (ตารางวา) is especially useful for smaller residential plots and for reading Thai land descriptions that break an area into Rai, Ngan and Square Wah. Converting Rai into Square Wah gives one single number that is convenient for comparing plots or checking a price quoted per Square Wah.
The relationship is exact: 1 Rai equals 400 Square Wah. Because 1 Square Wah equals 4 m², 400 Square Wah also equals 1,600 m².
Rai to Square Wah reference table
100 Square Wah
200 Square Wah
400 Square Wah
600 Square Wah
800 Square Wah
2,000 Square Wah
Using Square Wah for residential land comparisons
Suppose two residential plots are advertised as 0.5 Rai and 180 Square Wah. Converting 0.5 Rai to 200 Square Wah immediately shows that the first plot is 20 Square Wah larger.
If a seller quotes a price per Square Wah, converting the whole plot to Square Wah also makes a total-price calculation straightforward.
Rai, Wah and Square Wah are not interchangeable
- Wah is a length unit, while Square Wah is an area unit.
- 1 Ngan is 100 Square Wah; 1 Rai is 4 Ngan or 400 Square Wah.
- Do not multiply by 4 when converting Rai to Square Wah; the correct factor is 400.
Frequently asked questions
How many Square Wah are in 1 Rai?
1 Rai equals 400 Square Wah.
How many Square Wah are in 1 Ngan?
1 Ngan equals 100 Square Wah, so 1 Rai equals 4 Ngan or 400 Square Wah.
Where is Square Wah commonly used?
Square Wah is commonly used for residential land and smaller plots in Thailand.
How many Square Wah are in 0.25 Rai?
0.25 Rai equals 100 Square Wah.
How do I convert Square Wah back to Rai?
Divide the number of Square Wah by 400.
Can I use Square Wah to compare residential plot prices?
Yes. If listings quote price per Square Wah, converting every plot to Square Wah makes the comparison much easier.