Nautical Mile Calculator
Convert between nautical miles, statute miles, kilometers, and other marine distance units with precision
Distance Conversion
Advanced Calculations
Conversion Results
Converted Distance
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Equivalent Values
Nautical Miles
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Statute Miles
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Kilometers
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Meters
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📊 Nautical Distance Reference
| Unit | Equivalent To | Definition |
|---|---|---|
| 1 Nautical Mile | 1.15078 statute miles | 1 minute of latitude (historically) |
| 1 Nautical Mile | 1.852 kilometers | International standard since 1929 |
| 1 Cable | 0.1 nautical miles | Approximately 100 fathoms |
| 1 Fathom | 6 feet | Depth measurement |
| 1 League | 3 nautical miles | Traditional sea measurement |
| 1 Knot | 1 nautical mile per hour | Speed measurement |
Note: These values are standardized by the International Hydrographic Organization.
🧭 Marine Navigation Tips
Dead Reckoning
Calculate your position using speed, time, and course from a known position. Regularly update with fixes.
Current Adjustment
Account for current and leeway - they can significantly affect your actual position versus dead reckoning.
Time-Speed-Distance
Remember the formula: Distance = Speed × Time. At 10 knots, you'll cover 10 nautical miles in 1 hour.
Chart Work
Always plot positions on paper charts, not just electronic systems. Use the correct chart scale for your area.
Great Circle Routes
For long ocean passages, great circle routes provide the shortest distance between two points on a sphere.
Safety Margins
Always add safety margins to your calculations for weather, fatigue, and unexpected obstacles.
Dark Mode
Note: This calculator uses standard conversion factors (1 nautical mile = 1.852 km exactly). For critical navigation, always consult official nautical charts and consider environmental factors.