What is a Nautical Mile?

A nautical mile is a unit of distance commonly used in air and marine navigation. It is based on the Earth’s circumference and equals one minute of latitude. Alternatively, it’s the distance covered in one hour at a speed of one knot.

Knots and Nautical Miles

A knot is a unit of speed, specifically one nautical mile per hour. Its name comes from the historical method of measuring sailing speed using knots on a rope. Converting knots to nautical miles is as easy as multiplying the speed in knots by the sailing time in hours.

Nautical Mile Conversions

Nautical Mile vs. Mile

Comparing a nautical mile to a standard land mile, the former is approximately 15% longer. To convert nautical miles to miles, multiply by 1.15078.

  • 1 nmi = 1.15078 mi

Nautical Mile to Kilometer Conversion

One nautical mile is equivalent to 1.852 kilometers. To convert nautical miles to kilometers, multiply by 1.852.

  • 1 nmi = 1.852 km

Other Conversion Tools

In addition to the nautical mile calculator, explore our range of unit conversion tools:

  • Mile Converter
  • Steps to Miles Calculator
  • Kilometers to Miles Calculator

Whether converting between nautical miles and miles, calculating knots, or performing various math operations, our collection of calculators and converters simplifies the process.

Sharing the Knowledge

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