Convert Thou to Nautical Miles
Convert Thou (th) to Nautical Miles (nmi) instantly and accurately.
Conversion Formula
nmi = th × 1.371490281e-8
About Thou
A thou (also called mil) is one thousandth of an inch, equal to 0.0254 millimeters or 25.4 micrometers. This unit is commonly used in engineering and manufacturing in countries that use imperial measurements, particularly for specifying tolerances, wire gauges, and thin material thicknesses. For example, a standard plastic bag might be 1-2 thou thick, a sheet of paper is about 4 thou, and precision machined parts often have tolerances measured in thou. Electronic circuit board copper traces are typically 1.4 thou thick.
About Nautical Miles
A nautical mile (nmi) is equal to 1,852 meters or approximately 1.15078 statute miles, based on one minute of arc along Earth's meridian. This unit is the standard for maritime and aviation navigation worldwide because it directly relates to Earth's geometry, making navigation calculations simpler. Ships and aircraft measure speed in knots (nautical miles per hour). The distance between parallels of latitude is almost exactly 60 nautical miles. International maritime law uses nautical miles to define territorial waters and exclusive economic zones.
Quick Reference Table
| Thou (th) | Nautical Miles (nmi) |
|---|---|
| 1 th | 1.371 × 10-8 nmi |
| 2 th | 2.743 × 10-8 nmi |
| 5 th | 6.857 × 10-8 nmi |
| 10 th | 1.371 × 10-7 nmi |
| 25 th | 3.429 × 10-7 nmi |
| 50 th | 6.857 × 10-7 nmi |
| 100 th | 1.371 × 10-6 nmi |