Convert Rai to Square Nautical Miles

Convert Rai (rai) to Square Nautical Miles (nmi²) instantly and accurately.

Rai (rai)
Square Nautical Miles (nmi²)

Conversion Formula

nmi² = rai × 0.0004664853594

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.

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.

Quick Reference Table

Rai (rai)Square Nautical Miles (nmi²)
1 rai0.000466485 nmi²
2 rai0.000932971 nmi²
5 rai0.00233243 nmi²
10 rai0.00466485 nmi²
25 rai0.0116621 nmi²
50 rai0.0233243 nmi²
100 rai0.0466485 nmi²

→ Full Area Converter