Use this free online calculator to convert Rai to Square instantly. This area conversion tool provides accurate results for all your measurement needs.

Quick Reference

1 Rai = 172.2226 Square

1 Square = 5.806e-3 Rai

Rai to Square Conversion Formula

To convert Rai to Square, multiply by 172.2226.

Square = Rai × 172.2226

Rai = Square × 5.806e-3

To convert Square back to Rai, divide by 172.2226 (or multiply by 5.806e-3).

About These Units

About Rai

The rai is a traditional unit of land area in Thailand. The rai is now considered to equal exactly 1600 square meters, which is 0.16 hectare or approximately 0.3954 acre. The rai is divided into 4 ngan. The unit is called the hai in northern Thailand and the lai in Laos. The word means "field," that is, an upland field rather than a rice paddy.

About Square

The square is a traditional unit of area, often used for measuring roofing material, finished lumber, and other building materials. One square equals 100 square feet, 11.111 square yards, or about 9.290 square meters.

Rai to Square Conversion Table

Rai	Square	Square	Rai
0.1	17.2223	0.1	5.806e-4
0.5	86.1113	0.5	2.903e-3
1	172.2226	1	5.806e-3
2	344.4451	2	0.011613
5	861.1128	5	0.029032
10	1722.23	10	0.058064
20	3444.45	20	0.116129
25	4305.56	25	0.145161
50	8611.13	50	0.290322
100	17222.26	100	0.580644
250	43055.64	250	1.4516
500	86111.28	500	2.9032
1000	172222.57	1000	5.8064

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