Fuel Efficiency Converter & Trip Cost
Convert gas mileage across US MPG, UK MPG, Liters per 100km, and km/L instantly, plus calculate your total journey expenses.
Efficiency Converter Inputs
Trip Cost & Fuel Required Calculator
About Fuel Efficiency Units
Understand the difference between distance-per-volume and volume-per-distance standards globally.
Fuel efficiency is measured differently around the world. In North America, efficiency is calculated as distance traveled per unit of volume (Miles Per Gallon, or MPG), where higher numbers mean better efficiency. In contrast, Europe and many other regions use volume consumed per distance traveled (Liters per 100 kilometers, or L/100km), where lower numbers represent better efficiency.
US MPG
Based on the US liquid gallon (approx. 3.785 liters) and miles traveled. Standard across the United States.
UK Imperial MPG
Based on the larger Imperial gallon (approx. 4.546 liters). UK MPG values are roughly 20% higher than US MPG numbers.
Liters per 100km (L/100km)
The predominant metric standard in Europe, Australia, and New Zealand, indicating fuel volume needed for a 100km stretch.
100% Secure & Private
All conversions and calculations take place directly inside your web browser. No data is ever transmitted or stored.
Trip Expense Planning
Accurately project fuel expenses for road trips by factoring in fuel prices, distance units, and consumption rates.
Real-time Synchronized Inputs
Change any field and all other equivalents update simultaneously without requiring page reloads.
Frequently Asked Questions
Got questions about the Fuel Efficiency Converter? Find quick answers below.
Is the Fuel Efficiency Converter tool free to use?
Yes, our Fuel Efficiency Converter tool is 100% free to use on UtilityGlen with no hidden fees, subscriptions, or usage limits required.
Does the Fuel Efficiency Converter tool upload my data?
No, your data never leaves your browser. All generation and calculations are executed locally on your device for total privacy.
Can I use the Fuel Efficiency Converter tool on mobile?
Yes, our Fuel Efficiency Converter tool is fully responsive and optimized to work seamlessly on smartphones, tablets, and desktop browsers alike.