Fuel Cost Calculator
Calculate the fuel cost for your trip. Enter trip distance, vehicle fuel efficiency (MPG), and current gas price to estimate your fuel expenses.
Your vehicle's fuel economy
Price per gallon or liter
How do I calculate fuel cost for a trip?
Divide your trip distance by your vehicle's MPG to get gallons needed, then multiply by the price per gallon. For example: 300 miles ÷ 25 MPG = 12 gallons × $3.50 = $42.00 total fuel cost.
How can I improve my fuel efficiency?
Maintain steady speeds (use cruise control), keep tires properly inflated, remove excess weight, avoid aggressive acceleration/braking, and keep your engine tuned. Highway driving is typically more efficient than city driving.
What is the difference between MPG and L/100km?
MPG (miles per gallon) is used in the US - higher is better. L/100km (liters per 100 kilometers) is used in most other countries - lower is better. To convert: MPG = 235.214 ÷ L/100km.
Should I account for real-world vs. EPA fuel economy?
Yes, real-world fuel economy is typically 10-20% lower than EPA estimates, especially in city driving. Use your actual observed MPG from recent fill-ups for the most accurate cost estimates.