Useful Measurement Conversion Factors

The units of land measurement in Thailand are the Wah, Ngan, and Rai. Conversion factors between Thai measurements and metric measurements are:



1 Wah = 2 meters
1 square Wah = 4 square meters
100 square Wah = 400 square meters = 1 Ngan
4 Ngan = 1 Rai = 1,600 square meters
Conversion factors between Thai measurements, meters and acres are:
1 acre = 4840 square yards
1 acre = 4,046.8561 square meters