Fuel Cost Calculator
Planning a road trip? Calculate your fuel costs based on distance, your vehicle's MPG, and current gas prices. Budget accurately for your journey.
How to Calculate Fuel Costs
Calculating fuel costs is essential for budgeting road trips. The formula is:
For example, a 300-mile trip in a car that gets 28 MPG with gas at $3.50/gallon:
- 300 miles ÷ 28 MPG = 10.71 gallons
- 10.71 gallons × $3.50 = $37.50 total fuel cost
🚗 Road Trip Money Savers
Use Gas Price Apps
Apps like GasBuddy can help you find the cheapest gas along your route. Prices can vary by $0.30-0.50 per gallon between stations, which adds up on a long trip.
Highway Speed Sweet Spot
Most vehicles achieve optimal fuel efficiency between 50-60 mph. Driving at 70+ mph can reduce your MPG by 15-30%, significantly increasing trip costs.
— Rachel M., Automotive Journalist
Embed This Calculator
Add this Fuel Cost Calculator to your travel or automotive website:
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⚠️ Common Mistake: Mixing Up MPG and L/100km
MPG (miles per gallon) and L/100km are NOT directly convertible by simple division. Higher MPG = better efficiency. Lower L/100km = better efficiency. Don't just flip the numbers!
Frequently Asked Questions
How do I calculate fuel cost for a trip?
Divide the trip distance by your vehicle's MPG to get gallons needed. Then multiply gallons by the current fuel price. For example: 300 miles ÷ 25 MPG = 12 gallons. 12 gallons × $3.50 = $42 total fuel cost.
What is a good MPG for a car?
A good MPG is context-dependent. Compact cars typically get 30-35+ MPG, mid-size sedans 25-30 MPG, SUVs 20-28 MPG, and trucks 15-22 MPG. Hybrids and EVs can exceed 50 MPG equivalent.
How can I improve my car's fuel efficiency?
Maintain steady speeds (avoid aggressive acceleration/braking), keep tires properly inflated, remove excess weight, use cruise control on highways, and ensure regular vehicle maintenance like oil changes and air filter replacements.
Rachel confirms that our MPG-based calculations reflect real-world fuel consumption patterns and provide accurate trip cost estimates.