Convert Square Miles to Rai
Convert Square Miles (mi²) to Rai (rai) instantly and accurately.
Conversion Formula
rai = mi² × 1618.742569
About Square Miles
A square mile (mi²) is an imperial unit of area equal to a square with sides of one mile (5,280 ft × 5,280 ft). It is used for measuring large land areas like counties, states, and countries in the United States. Los Angeles covers about 503 mi², Rhode Island (smallest US state) is roughly 1,214 mi², and Alaska is about 665,384 mi². This unit is standard in American geography, land surveying, and regional planning.
About Rai
A rai (ไร่) is the standard Thai unit of land area, defined as exactly 1,600 m² (40 m × 40 m). It is used throughout Thailand for all land measurement - from rice paddies to urban plots and national parks. Thai real estate listings always quote land area in rai, ngan (400 m² = ¼ rai), and talang wah (4 m² = 1 square wah). Thailand's total rice-paddy area is reported in millions of rai. One rai equals approximately 0.395 acres or 0.16 hectares.
Quick Reference Table
| Square Miles (mi²) | Rai (rai) |
|---|---|
| 1 mi² | 1618.74 rai |
| 2 mi² | 3237.49 rai |
| 5 mi² | 8093.71 rai |
| 10 mi² | 16187.4 rai |
| 25 mi² | 40468.6 rai |
| 50 mi² | 80937.1 rai |
| 100 mi² | 161874 rai |