How can I accurately measure distance and fuel?

For best results: 1. Fill your gas tank completely. 2. Reset your trip odometer to zero. 3. Drive until you need to refuel. 4. Fill the tank completely again and note the exact amount of fuel added. 5. Record the distance on your trip odometer. Use these two numbers in our online calculator.

What's the difference between MPG and L/100km?

MPG (Miles Per Gallon) measures how many miles you can travel on one gallon of fuel. A higher MPG is better. L/100km (Liters per 100 kilometers) measures how many liters of fuel are needed to travel 100 kilometers. A lower L/100km is better.

Is this gas mileage calculator free?

Yes, this online tool is 100% free for everyone to use to calculate their vehicle's fuel economy.

Gas Mileage Calculator | Conversores Online

Gas Mileage Calculator

Calculate your vehicle's fuel efficiency.

Gas Mileage Calculator

Calculate your vehicle's fuel efficiency.

Distance (miles)

Fuel Used (gallons)

How to Use the Free Online Gas Mileage Calculator

Choose your preferred measurement system: MPG (Miles per Gallon) or L/100km (Liters per 100km).
Input the total distance you drove (e.g., from your trip odometer).
Input the amount of fuel you used to travel that distance (e.g., from your fuel pump receipt).
The calculator will automatically show your car's fuel efficiency, for free and right here online.

Frequently Asked Questions