Travel Fuel Cost & Road Trip Planner
Calculate gas cost for road trips, total fuel gallons consumed, MPG efficiency, and per-passenger travel costs.
Configurable Calculation Inputs
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Trip Distance (Miles): number (Default: 650 mi)
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Vehicle Fuel Economy (MPG): slider (Default: 28 mpg)
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Gas Price ($ / Gallon): number (Default: 3.65 $/gal)
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Number of Travelers: number (Default: 3 passengers)
Mathematical Formula: Trip Fuel Expense Equation
Total Fuel Cost = (Trip Distance / Vehicle MPG) * Fuel Price per Gallon
Calculates the volume of fuel required and splits driving costs equally among vehicle occupants.
Comprehensive Guide & Context
Aerodynamics and Highway Speeds
Driving at 75 mph instead of 65 mph can reduce fuel economy by up to 15% due to exponential aerodynamic drag increases.
Worked Calculation Examples
Road Trip from LA to San Francisco (Round Trip)
760 miles round-trip at 30 MPG and $4.20/gal gas with 2 friends.
Result: $106.40 Total ($53.20 each)
Frequently Asked Questions
How is MPG converted to Liters per 100km?
Divide 235.215 by the MPG number to get L/100km (e.g., 235.215 / 30 MPG ≈ 7.84 L/100km).