Fuel Economy Calculator

Calculate MPG, cost per mile, and fuel costs for a trip. Compare gas vs. highway driving efficiency.

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Distance (miles)

Fuel Used (gallons)

Gas Price ($/gal)

📐 How We Calculate — Learn about our calculation methodology, data sources, and quality standards.

Frequently Asked Questions

How do I improve fuel economy?

Keep tires properly inflated, drive 55-65 MPH, avoid rapid acceleration, remove excess weight, and use cruise control on highways.

What is the difference between MPG and L/100km?

MPG (miles per gallon) is used in the US. L/100km (liters per 100 kilometers) is used globally. Lower L/100km = better efficiency.

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