Convert Square Nautical Miles to Square Rods
Convert Square Nautical Miles (nmi²) to Square Rods (sq rd) instantly and accurately.
Conversion Formula
sq rd = nmi² × 135607.6378
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 Square Rods
A square rod (sq rd), also called a perch or square pole, equals the area of a square with sides of one rod (5.0292 m or 16.5 ft), giving approximately 25.29 m². This traditional unit was central to land surveying before the adoption of the metric system and remains embedded in legal property descriptions in the United States. There are exactly 160 square rods in one acre, and 40 square rods in one rood. Old farmland deeds and archaic land records in the UK and US frequently reference perches and square rods.
Quick Reference Table
| Square Nautical Miles (nmi²) | Square Rods (sq rd) |
|---|---|
| 1 nmi² | 135608 sq rd |
| 2 nmi² | 271215 sq rd |
| 5 nmi² | 678038 sq rd |
| 10 nmi² | 1356080 sq rd |
| 25 nmi² | 3390190 sq rd |
| 50 nmi² | 6780380 sq rd |
| 100 nmi² | 13560800 sq rd |