Gallons Per Hour Fuel Calculator

The Formula

The formula for calculating fuel consumption in gallons per hour is:

\[Fuel Consumption (gal/hr) = \frac{Engine Power (HP) \times Fuel Efficiency (lb/hp-hr)}{Fuel Density (lb/gal)}\]

Where:

• Fuel Consumption: The rate of fuel usage (in gallons per hour)
• Engine Power: The power output of the engine (in horsepower)
• Fuel Efficiency: The amount of fuel consumed per unit of power per hour
• Fuel Density: The weight of the fuel per gallon

Calculation Steps

1. Multiply the engine power by the fuel efficiency to get fuel consumption in pounds per hour
2. Divide the result by the fuel density to convert to gallons per hour

Example Calculation

Let's calculate the fuel consumption for an engine with the following specifications:

• Engine Power: 200 HP
• Fuel Efficiency: 0.5 lb/hp-hr
• Fuel Density: 6.7 lb/gal

Fuel Consumption = (200 × 0.5) ÷ 6.7 = 14.93 gal/hr

Visual Representation

This visual shows the fuel consumption rate based on our example calculation.