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Free Fuel Cost Calculator

Estimate the fuel cost for any trip before you go. Enter your distance, vehicle efficiency, and local fuel prices to get an accurate cost estimate for gas or diesel.

Fuel Cost Calculator

$0.00
Total Fuel Cost
Fuel Needed0
Cost per Mile/km$0.00

How to Use the Fuel Cost Calculator

Planning a road trip or just wondering about your commute costs? This fuel cost calculator gives you an accurate estimate. Choose between US units (miles, MPG, dollars per gallon) or metric units (kilometers, liters per 100km, dollars per liter).

Enter the total distance of your trip, your vehicle's fuel efficiency (check your owner's manual or the EPA rating), and the current fuel price at your local station. The calculator shows the total fuel cost, the amount of fuel you'll need, and the cost per mile or kilometer.

For example, a 300-mile trip in a car that gets 25 MPG with gas at $3.50/gallon will cost about $42 in fuel. Use this to budget your trip or compare the fuel costs of different vehicles.

Fuel Cost Formula

US: Cost = (Distance / MPG) × Price per Gallon
Metric: Cost = (Distance × L/100km / 100) × Price per Liter

Frequently Asked Questions

The estimate is accurate based on the numbers you enter. Actual fuel costs may vary due to driving conditions (highway vs. city), traffic, weather, driving style, and changes in fuel prices. For best results, use your vehicle's actual average MPG rather than the EPA rating.
Maintain proper tire pressure, avoid aggressive acceleration and braking, remove excess weight from your vehicle, use cruise control on highways, and keep up with regular maintenance like oil changes and air filter replacements.
For long road trips, use highway MPG. For daily commuting with mixed driving, use your vehicle's combined MPG rating. For the most accurate estimate, calculate your actual average MPG by tracking your miles driven and gallons purchased over several fill-ups.

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