Acre to Rai Converter
Convert acres to Thai Rai instantly when comparing international land listings or area measurements with Thailand.
Calculator
Conversion formula
1 acre ≈ 2.529285 Rai
Examples
≈ 1.264643 Rai
≈ 2.529285 Rai
≈ 12.646427 Rai
≈ 25.292853 Rai
How to use this converter
Enter the amount of acres above. The result in Rai updates instantly in your browser. The calculator works on mobile and desktop without sending your conversion input to a ThailandCalc application database.
For several Thai and international land units at once, return to the full ThailandCalc land-area converter.
Converting international acre listings to Thai Rai
Acre is commonly encountered in property and agricultural listings from countries such as the United States and United Kingdom, while Thai listings usually use Rai. Converting acres to Rai helps put an overseas land size into a Thai frame of reference.
Unlike the Rai-to-m² relationship, acre to Rai produces a decimal factor. Using the international acre definition, 1 acre equals 4,046.8564224 m², which is approximately 2.529285 Rai.
Acre to Rai reference values
≈ 0.632321 Rai
≈ 1.264643 Rai
≈ 2.529285 Rai
≈ 5.058571 Rai
≈ 12.646426 Rai
≈ 25.292853 Rai
Example: comparing overseas and Thai land listings
If an overseas listing offers 4 acres, the equivalent area is about 10.117 Rai. Converting the area first makes it easier to compare with Thai listings advertised in Rai.
For rough property comparisons, two or three decimal places are usually sufficient. Keep more decimals only when you need a more precise numerical conversion.
Approximation and rounding
- The acre-to-Rai factor is not a whole number, so rounded results are approximate.
- Do not substitute hectares for acres; 1 hectare is 6.25 Rai, while 1 acre is about 2.529285 Rai.
- A unit conversion does not account for differences in land law, zoning, access or market value between countries.
Frequently asked questions
How many Rai are in 1 acre?
1 acre is approximately 2.529285 Rai.
Are acre and Rai the same unit?
No. Acre is used in several countries, while Rai is a traditional land-area unit widely used in Thailand.
How many decimal places does the calculator show?
The calculator shows up to 6 decimal places for useful precision.
Why is acre to Rai an approximate conversion?
An international acre is 4,046.8564224 m², which does not divide into 1,600 m² per Rai as a simple whole-number ratio.
How many acres are in 1 Rai?
1 Rai is approximately 0.395369 acre.
Should I round acre-to-Rai results?
For general comparisons, 2–3 decimals are usually enough. Keep more precision when the exact numeric area matters.