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The nautical mile (NM) is a unit of measurement used in maritime and air navigation. One nautical mile equals exactly 1.852 kilometers, based on the circumference of the Earth.
The calculator uses the conversion formula:
Where:
Details: This conversion is essential for navigation, aviation, maritime operations, and any application requiring precise distance measurements over the Earth's surface.
Tips: Enter the distance in kilometers to get the equivalent in nautical miles. The value must be positive.
Q1: Why is a nautical mile different from a statute mile?
A: A nautical mile is based on the Earth's circumference (1 minute of latitude), while a statute mile is a traditional land measurement (5,280 feet).
Q2: Where is this conversion most commonly used?
A: Primarily in marine navigation, aviation, and oceanography where precise distance measurements related to the Earth's geometry are needed.
Q3: How precise is the conversion factor?
A: The 1.852 km/NM ratio is exact by international agreement, not an approximation.
Q4: Are there other nautical measurement conversions?
A: Yes, knots (nautical miles per hour) are the standard speed measurement in maritime and aviation contexts.
Q5: Why use nautical miles instead of kilometers?
A: Nautical miles simplify navigation as they directly relate to latitude (1 NM = 1 minute of latitude).