How to convert feet to nautical miles
To convert a measurement in feet to nautical miles, multiply the value by 0.0001645788. The conversion factor comes from the relationship between both units and the meter (the SI base unit of length).
For example, to convert 5 ft to nautical miles: 5 × 0.0001645788 = 0.0008228942 nmi.
What is a foot?
A foot is an imperial unit of length equal to 12 inches or exactly 0.3048 meters. One of the oldest units of measurement, based on the human foot. Used in ancient civilizations from Egypt to Rome. The international foot was defined as exactly 0.3048 meters in 1959.
Common uses of feet include: Human height in the US and UK (e.g. 5'10"); Room dimensions and ceiling height; Aviation altitude measurement worldwide; Construction and building codes in imperial countries.
What is a nautical mile?
A nautical mile is a unit of length equal to exactly 1,852 meters, historically based on one minute of arc of latitude along any meridian. Developed for maritime navigation because of its convenient relationship to latitude. One nautical mile corresponds to one minute (1/60 degree) of latitude. Internationally standardized at 1,852 meters in 1929.
Common uses of nautical miles include: Maritime navigation and shipping routes; Aviation distance and airspeed (knots = nmi/hour); Territorial water boundaries (12 nmi from shore); Oceanic weather forecasting and reporting.
When you need to convert feet to nautical miles
Converting feet to nautical miles is useful in scientific calculations, international trade, and any context where measurements need to be expressed in the other system for clarity or compliance.
Feet to nautical miles worked examples
Here are some common values converted:
1 ft = 0.0001645788 nmi 5 ft = 0.0008228942 nmi 10 ft = 0.0016457883 nmi 50 ft = 0.0082289417 nmi 100 ft = 0.0164578834 nmi
Frequently asked questions
How many nautical miles are in one foot?
One foot (ft) equals 0.0001645788 nautical miles (nmi). Multiply any value in feet by 0.0001645788 to convert to nautical miles.
How do I convert feet to nautical miles?
Multiply the value in feet by 0.0001645788. For example, 5 ft × 0.0001645788 = 0.0008228942 nmi.
How do I convert nautical miles to feet?
Multiply the value in nautical miles by 6,076.1155, or divide by 0.0001645788. Use the swap button on the converter above to reverse the direction.
Is the foot to nautical mile conversion exact?
Yes, one nautical mile is defined as exactly 1,852 meters, so the conversion uses an exact factor.
What is the formula for feet to nautical miles?
The formula is: nmi = ft × 0.0001645788. This is derived from the definition of both units relative to the meter (the SI base unit of length).