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

Quick Reference

1 Square Fathom = 2.090e-3 Rai

1 Rai = 478.3941 Square Fathom

Square Fathom to Rai Conversion Formula

To convert Square Fathom to Rai, multiply by 2.090e-3.

Rai = Square Fathom × 2.090e-3

Square Fathom = Rai × 478.3941

To convert Rai back to Square Fathom, divide by 2.090e-3 (or multiply by 478.3941).

About These Units

About Square Fathom

The square fathom is a unit of area equal to the area of a square with sides of one fathom (6 feet). It was traditionally used in maritime and nautical measurements.

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.

Square Fathom to Rai Conversion Table

Square Fathom	Rai	Rai	Square Fathom
0.1	2.090e-4	0.1	47.8394
0.5	1.045e-3	0.5	239.1971
1	2.090e-3	1	478.3941
2	4.181e-3	2	956.7882
5	0.010452	5	2391.97
10	0.020903	10	4783.94
20	0.041807	20	9567.88
25	0.052258	25	11959.85
50	0.104516	50	23919.71
100	0.209033	100	47839.41
250	0.522582	250	119598.53
500	1.0452	500	239197.05
1000	2.0903	1000	478394.11

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