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Calcimator

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
Estimated Range25 nm
Efficiency1.67 nm/gal
10% Reserve3 gal
Total Fuel (with reserve)33 gal

Fuel Needed

30 gal

How to Use This Calculator
  1. Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
  2. Engine Horsepower — Total engine horsepower of your boat. Accepts values from 5 HP to 2,000 HP (default: 150 HP).
  3. Cruising Speed — Average cruising speed in knots. Accepts values from 1 knots to 80 knots (default: 20 knots).
  4. Fuel Burn Rate — Gallons per hour consumed at cruising speed. Accepts values from 0.5 GPH to 200 GPH (default: 12 GPH).
  5. Trip Distance — One-way trip distance in nautical miles. Accepts values from 1 nm to 5,000 nm (default: 50 nm).
  6. Fuel Price — Current price per gallon of marine fuel. Accepts values from $0.5 /gal to $20 /gal (default: $5.5 /gal).
  7. Once all inputs are set, review your results in the Results panel. Here's what each output means:
  8. Fuel Needed — shown as a numeric value. This is the primary result of this calculator.
  9. Trip Time — shown as a numeric value.
  10. Fuel Cost — shown as a dollar amount.
  11. Estimated Range — shown as a numeric value.
  12. Efficiency — shown as a numeric value.
  13. 10% Reserve — shown as a numeric value.
  14. Total Fuel (with reserve) — shown as a numeric value.
  15. Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
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