Gas Mileage Calculator

Calculate your vehicle's fuel efficiency, gas mileage (MPG), fuel costs, and trip expenses. Track your car's performance and optimize fuel consumption.

Calculation Type

What would you like to calculate?

Calculate Gas Mileage

Distance Traveled

Fuel Used

Quick Examples

Results

💡 Fuel Efficiency Tips:

• Maintain steady speeds and avoid rapid acceleration
• Keep tires properly inflated
• Remove excess weight from your vehicle
• Use cruise control on highways
• Regular maintenance improves efficiency

How to Use the Gas Mileage Calculator

To calculate your vehicle's fuel efficiency and costs:

Choose what you want to calculate from the dropdown menu
Enter the required information (distance, fuel used, prices, etc.)
Select appropriate units (miles/km, gallons/liters)
View your results including MPG, costs, and efficiency ratings
Compare different vehicles to make informed decisions
Use the tips provided to improve your fuel efficiency

How Gas Mileage is Calculated

Miles Per Gallon (MPG)

Formula: MPG = Distance Traveled ÷ Fuel Used

Example: 300 miles ÷ 10 gallons = 30 MPG

Fuel Cost Calculation

Formula: Cost = (Distance ÷ MPG) × Fuel Price

Example: (500 miles ÷ 25 MPG) × $3.50 = $70.00

Efficiency Ratings

Excellent: 40+ MPG (Hybrids, efficient cars)
Good: 30-39 MPG (Economy cars)
Average: 20-29 MPG (Standard cars, small SUVs)
Poor: Below 20 MPG (Large SUVs, trucks)

Example Calculation

Scenario: Road trip from New York to Boston

Distance: 220 miles
Vehicle MPG: 28 MPG
Gas price: $3.45 per gallon

Calculations:

Fuel needed: 220 ÷ 28 = 7.86 gallons
Total cost: 7.86 × $3.45 = $27.12
Cost per mile: $27.12 ÷ 220 = $0.123

Frequently Asked Questions

How can I improve my car's gas mileage?

Regular maintenance, proper tire inflation, smooth driving habits, removing excess weight, and using cruise control can all improve fuel efficiency.

What's considered good gas mileage?

Generally, 30+ MPG is considered good for most vehicles. Compact cars often achieve 35-40 MPG, while SUVs and trucks typically get 15-25 MPG.

How accurate are EPA fuel economy ratings?

EPA ratings provide standardized estimates, but real-world mileage can vary based on driving conditions, weather, vehicle maintenance, and driving habits.