Marine Fuel Consumption Calculator
Calculate fuel needed, trip time, cost, and range for your boat based on engine specs, speed, and distance.
Inputs
HP
knots
GPH
nm
$/gal
Results
Fuel Needed
30 gal
Trip Time2.5 hrs
Fuel Cost$165.00
Estimated Range25 nm
Efficiency1.67 nm/gal
10% Reserve3 gal
Total Fuel (with reserve)33 gal
How to Use This Calculator
- Enter your engine's horsepower and your typical cruising speed in knots.
- Input the fuel burn rate in gallons per hour (GPH) at cruise — check your owner's manual.
- Enter the trip distance in nautical miles and current marine fuel price per gallon.
- Review total fuel needed, trip time, and fuel cost for the voyage.
- Use the 10% reserve output to ensure you carry adequate fuel for safety.
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