Convert Tsubo to Square Nautical Miles
Convert Tsubo (坪) to Square Nautical Miles (nmi²) instantly and accurately.
Conversion Formula
nmi² = 坪 × 9.638127259e-7
About Tsubo
A tsubo (坪) is the traditional Japanese unit of floor area, equal to 400/121 m² (approximately 3.306 m²) - defined as the footprint of two tatami mats placed side by side. It has been the standard for measuring rooms and apartments in Japan for centuries and remains widely used in real estate and architecture today. Apartment sizes in Japan are routinely quoted in tsubo alongside square meters. One tsubo equals approximately 35.58 square feet or 3.95 square yards.
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
| Tsubo (坪) | Square Nautical Miles (nmi²) |
|---|---|
| 1 坪 | 9.638 × 10-7 nmi² |
| 2 坪 | 1.928 × 10-6 nmi² |
| 5 坪 | 4.819 × 10-6 nmi² |
| 10 坪 | 9.638 × 10-6 nmi² |
| 25 坪 | 2.41 × 10-5 nmi² |
| 50 坪 | 4.819 × 10-5 nmi² |
| 100 坪 | 9.638 × 10-5 nmi² |