Thailand has its very own units of measurements when dealing with land, which can be a little confusing at first. The units you will come across most often are sq.Wah and Rai. Metric units are used when dealing with buildings.

• 1 Wah = 2 m
• 1 sq.Wah = 4 sq.m
• 1 Rai = 1,600 sq.m
• 1 Rai = 400 sq.Wah
• 1 Rai = 0.40 Acre (approx.)
• 1 Rai = 0.16 Hectare
• 1 Ngan = 100 sq.Wah
  
  

• 1 m = 0.5 Wah
• 1 sq.m = 0.25 sq.Wah
• 1 Acre = 2.53 Rai
• 1 Hectare = 6.25 Rai