In Thailand, ? – 21st century, a unit of land area, by the Weights and Measures Act B.E. 2542 (1999) = 1,600 square meters (approximately 1,914 square yards or 0.40 acre).1 It is one square sen. It is not used for paddy fields. Abbreviation, r.

Ordinarily, foreigners cannot own land in Thailand. However, a foreigner who invests 40 million baht in Thailand and receives "Board of Investment" approval may be allowed to own up to 1 rai of land in their own name.

In Lahu: lay, hay.

1. Technical Conversion Factors…, 1972, page 322.



rai ... Agrarian measure of twenty fathoms square.

D. J. B. Pallegoix.
J. L. Vey, revisor.
Siamese French English Dictionary.
Bangkok: Printing-Office of the Catholic Mission, 1896.
Page 799.

"Fathom" translates wah.

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