Convert Square Nautical Miles to Rai
Convert Square Nautical Miles (nmi²) to Rai (rai) instantly and accurately.
Conversion Formula
rai = nmi² × 2143.69
About Square Nautical Miles
A square nautical mile (nmi²) equals the area of a square with sides of one nautical mile (1,852 m), giving approximately 3,429,904 m² - about 343 hectares. This unit is used in maritime and aviation contexts to describe patrol zones, territorial extents, and maritime boundaries. Exclusive Economic Zones (EEZs) and military operating areas are often quoted in square nautical miles. One square nautical mile is approximately 1.32 square statute miles.
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 Nautical Miles (nmi²) | Rai (rai) |
|---|---|
| 1 nmi² | 2143.69 rai |
| 2 nmi² | 4287.38 rai |
| 5 nmi² | 10718.5 rai |
| 10 nmi² | 21436.9 rai |
| 25 nmi² | 53592.3 rai |
| 50 nmi² | 107185 rai |
| 100 nmi² | 214369 rai |