Our sea distance calculator uses advanced mapping technology to provide highly accurate measurements. The distances are calculated based on the most direct navigable route between points, considering real maritime paths. Accuracy is typically within 1-2% of actual sailing distances.

Yes! Simply enter your boat's fuel consumption rate (liters or gallons per hour), average cruising speed, and current fuel price. The calculator will automatically compute the estimated fuel cost for your entire journey based on the calculated distance and trip duration.

A nautical mile is based on the Earth's longitude and latitude lines and equals 1.852 kilometers or 1.15078 regular miles. Nautical miles are the standard measurement for maritime and aviation navigation because they relate directly to degrees of latitude on navigation charts.

Simply click on each port or waypoint you want to visit in order. The calculator will connect them automatically, showing your complete route. You can add unlimited stops, move waypoints by dragging them, and remove stops by clicking and selecting 'Delete'. The total distance updates automatically.

While our calculator is highly accurate for route planning, commercial shipping involves additional factors like weather routing, traffic separation schemes, and specific port approaches. For commercial use, we recommend using this as an initial planning tool and consulting official nautical charts for final route decisions.

Yes, our sea distance calculator is completely free to use. There are no registration requirements, hidden fees, or usage limits. You can calculate unlimited routes, share your results, and access all features without any cost.

Absolutely! Click the 'Share' button at the top-right of the map to generate a shareable link. This link contains all your waypoints, calculated distances, and settings, allowing others to view your exact route and calculations.

You need three pieces of information: 1) Your boat's average cruising speed (in knots or km/h), 2) Fuel consumption rate (liters or gallons per hour), and 3) Current fuel price per liter or gallon. The calculator uses these to estimate total fuel costs and trip duration.