Nauticalculator: Boat Calcs

Nauticalculator puts all the everyday boating calculations in your pocket. Plan a trip, check your speed or estimate fuel in seconds: free, simple, no registration and no ads.

DISTANCE
- Port to Port Distance: estimate the sea distance between two ports or points on a map
- Boat Distance: distance travelled from speed and time

TIME & SPEED
- Boat Travel Time: trip duration and ETA from distance and speed
- Boat Speed: average speed from distance and time
- Horsepower to MPH: estimate top speed from horsepower, weight and hull type
- Propeller Slip: compare theoretical and measured speed

FUEL & COSTS
- Boat Fuel Consumption: trip fuel, reserve and cost
- Boat Gas Mileage: NMPG, MPG, km/l and l/100 km
- Fuel Savings and Boat Depreciation

NAVIGATION & SEA CONDITIONS
- Lat & Long Finder and Nautical Direction
- Wave Height and Motion Sickness Risk

CONVERTERS
- Knots ⇄ MPH, Knots ⇄ KM/H
- Nautical miles ⇄ miles, sea miles ⇄ kilometers
- MPH ⇄ horsepower

MADE FOR USE ON BOARD
- All calculators in one clear tile overview
- Save your favorite calculators with one tap
- Related calculators suggested under every calculator
- Red night mode that protects your night vision
- Clean dark design, easy to read in sunlight and at night

Nauticalculator is a planning aid. Always check official charts, weather forecasts and local regulations before you set out.