Nautical Mile Converter
Statute Miles
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Kilometers
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Meters
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Feet
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Understanding Nautical Miles
A nautical mile = 1,852 meters = 1.151 statute miles. Defined as one minute of arc of latitude along any meridian.
Speed in knots = nautical miles per hour. Named from old rope-knot counting method.
Used in both marine and aviation navigation worldwide. Standardized internationally in 1929.
Frequently Asked Questions
Why nautical miles?
Based on Earth geometry: 1 NM = 1 minute of latitude. Chart latitude scale serves as distance ruler.
NM vs regular mile?
1 NM = 1.151 statute miles = 1.852 km. About 15% longer than a statute mile.
What is a knot?
1 knot = 1 NM per hour = 1.151 mph = 1.852 km/h.
Used in aviation?
Yes, aviation uses NM for distance and knots for speed worldwide.