Convert Feet to Nautical Miles
Convert Feet (ft) to Nautical Miles (nmi) instantly and accurately.
Conversion Formula
nmi = ft × 0.0001645788337
About Feet
A foot (ft) is equal to 12 inches or 30.48 centimeters, originally based on the length of a human foot. It remains widely used in the United States and some other countries for measuring height, room dimensions, and distances. For reference, a standard door is about 6.5-7 feet tall, ceiling height in homes is typically 8-9 feet, and a basketball hoop stands 10 feet high. The foot is also used in aviation (altitude) and real estate (square footage).
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
| Feet (ft) | Nautical Miles (nmi) |
|---|---|
| 1 ft | 0.000164579 nmi |
| 2 ft | 0.000329158 nmi |
| 5 ft | 0.000822894 nmi |
| 10 ft | 0.00164579 nmi |
| 25 ft | 0.00411447 nmi |
| 50 ft | 0.00822894 nmi |
| 100 ft | 0.0164579 nmi |