How to Figure Nautical Miles
Nautical miles are used almost exclusively by sailors and aviators during their time on or over the water. A nautical mile is slightly longer than a standard mile, and denotes approximately one minute of arc of latitude along a meridian line. Nautical miles are used predominately for ease-of-reference with sea-going charts. If you wish to calculate the distance between two points in nautical miles, you will need to convert from standard miles to nautical miles.
Instructions
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1
Measure out the distance between the two points on the map.
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2
Compare the distance to the map key. The key will tell you how many miles is in an inch of distance on the map.
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3
Multiply the distance in miles by .868976242. This will give you the distance in nautical miles.
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