Convert Circular Mils to Square Nautical Miles
Convert Circular Mils (cmil) to Square Nautical Miles (nmi²) instantly and accurately.
Conversion Formula
nmi² = cmil × 1.477322628e-16
About Circular Mils
A circular mil (cmil) is a unit used in electrical engineering to specify the cross-sectional area of round wires and cables. Equal to the area of a circle with a diameter of exactly one thou (one thousandth of an inch) - approximately 5.067 × 10⁻¹⁰ m² - it simplifies wire calculations: the cross-sectional area in cmil equals the wire diameter in mils, squared. US electrical codes (NEC/NEMA) specify conductor sizes in circular mils, and large cables are rated in thousands of circular mils (kcmil or MCM). A 12 AWG wire, common in US household wiring, has a cross-section of 6,530 cmil.
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
| Circular Mils (cmil) | Square Nautical Miles (nmi²) |
|---|---|
| 1 cmil | 1.477 × 10-16 nmi² |
| 2 cmil | 2.955 × 10-16 nmi² |
| 5 cmil | 7.387 × 10-16 nmi² |
| 10 cmil | 1.477 × 10-15 nmi² |
| 25 cmil | 3.693 × 10-15 nmi² |
| 50 cmil | 7.387 × 10-15 nmi² |
| 100 cmil | 1.477 × 10-14 nmi² |