Nautical Navigation Calculator

Speed, distance, time, fuel, tide, and dead reckoning calculations. Zero dependencies.

Speed/Dist/Time

Fuel

Tides

Dead Reckoning

Conversions

Speed / Distance / Time

Leave one field empty to solve for it.

Speed (knots)

Distance (nautical miles)

Time (hours)

Sailboat 2hr Motorboat 8hr Ferry 24hr 100 NM trip

Speed (knots)

Burn Rate (gal/hr)

Distance (NM)

Tank Size (gal)

Low Tide Height (ft)

High Tide Height (ft)

Low Tide Time

High Tide Time

Estimate position from last known fix.

Start Lat

Start Lon

Course (degrees true)

Speed (knots)

Time elapsed (hours)

Current set (degrees)

Current drift (knots)

Nautical Miles

Kilometers

Statute Miles

Meters

Fathoms

Feet

Knots

km/h

mph

m/s