Fuel Efficiency Calculator

Track your fuel economy and optimize your driving

Log a Fill-Up

Current mileage
Amount filled up
Fuel price
Your measurement system
Your Fuel Efficiency
--
MPG
Add fill-ups to calculate
Distance Traveled
0 mi
Total Fuel Used
0 gal
Total Fuel Cost
$0.00
Cost per Mile
$0.00

Fill-Up History

No fill-ups logged yet. Add your first fill-up above to start tracking!

Efficiency Trend

Cost per Fill-Up

How Do You Compare?

Your Vehicle
-- MPG
Your average
Average Vehicle
25 MPG
US average
Efficient Vehicle
35+ MPG
Hybrid/Efficient

Annual Projection

Annual Fuel Cost
$0
Annual Gallons
0 gal
Monthly Cost
$0
CO₂ per Year
0 lbs

Tips to Improve Fuel Efficiency

Drive Smoothly

Aggressive driving can lower gas mileage by 15-30% at highway speeds

Check Tire Pressure

Under-inflated tires can lower gas mileage by 0.6% on average

Remove Extra Weight

An extra 100 pounds can reduce MPG by about 1%

Use Recommended Fuel

Using higher octane than recommended doesn't improve efficiency

What is a Fuel Efficiency Calculator?

A fuel efficiency calculator helps you track and calculate your vehicle's fuel economy by logging fill-ups over time. By recording your odometer readings and gallons/liters filled, you can accurately calculate your miles per gallon (MPG) or kilometers per liter (km/L), track trends in your fuel economy, and estimate annual fuel costs. This helps you identify maintenance issues, optimize driving habits, and save money on fuel.

How to Track Your Fuel Efficiency

Understanding Your MPG

Your vehicle's fuel efficiency can vary based on many factors:

What's a Good MPG?

Fuel efficiency varies by vehicle type:

Calculating Annual Fuel Costs

Based on your average MPG and annual mileage, you can estimate annual fuel costs:

Improving your fuel efficiency by just 5 MPG can save you hundreds of dollars per year and reduce your carbon footprint significantly.

Environmental Impact

Every gallon of gasoline burned produces approximately 19.6 pounds of CO₂. By tracking and improving your fuel efficiency, you can:

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