Converting Rai to Square Meters can be complex and can create legal issues when people do not fully understand what a Rai of land is or the building size. It is important to ensure that when you are signing at the contract stage that you know exactly what it is..Also ensure that you understand what you are selling or buying and how best to deal with this. These are the basics for land conversion in the Thai land measurement system. Thailand does not have an Imperial or Metric system.
1 Rai = 4 Ngan (or 1600 sq. m.)
1 sq. wah = 4 sq. m.
1 acre = 2.471 rai or 43,560 sq. ft.
1 ngan = 100 wah (or 400 sq. m.)
1 hectare = 6.25 rai or 10,000 sq. m.
SQ. WAH |
SQ. FT. |
SQ. M. |
NGAN |
RAI |
ACRE(S) |
HECTARE(S) |
1 |
43 |
4 |
||||
100 |
4,305 |
400 |
1 |
0.25 |
0.10 |
0.04 |
400 |
17,222 |
1,600 |
4 |
1 |
0.40 |
0.16 |
800 |
34,444 |
3,200 |
8 |
2 |
0.80 |
0.32 |
1,200 |
51,667 |
4,800 |
12 |
3 |
1.20 |
0.48 |
1,600 |
68,888 |
6,400 |
16 |
4 |
1.60 |
0.64 |
2,000 |
86,111 |
8,000 |
20 |
5 |
2.00 |
0.80 |
2,400 |
103,333 |
9,600 |
24 |
6 |
2.40 |
0.96 |
2,800 |
120,555 |
11,200 |
28 |
7 |
2.80 |
1.12 |
3,200 |
137,777 |
12,800 |
32 |
8 |
3.20 |
1.28 |
3,600 |
155,000 |
14,400 |
36 |
9 |
3.60 |
1.44 |
4,000 |
172,222 |
16,000 |
40 |
10 |
4.00 |
1.60 |
32,000 |
80 |
20 |
8 |
3.20 |
||
48,000 |
120 |
30 |
12 |
4.80 |
||
64,000 |
160 |
40 |
16 |
6.40 |
||
80,000 |
200 |
50 |
20 |
8.00 |
||
96,000 |
240 |
60 |
24 |
9.60 |
||
112,000 |
280 |
70 |
28 |
11.20 |
||
128,000 |
320 |
80 |
32 |
12.80 |
||
144,000 |
360 |
90 |
36 |
14.40 |
||
160,000 |
400 |
100 |
40 |
16.00 |