About Fuel Economy Converter
Comprehensive multi-standard automotive fuel economy converter. Seamlessly convert between US MPG, UK MPG, Metric L/100km, and km/L. Includes annual fuel consumption estimates and projected annual gasoline budgets.
Key Capabilities & Features
- Instant two-way conversion across US MPG, Imperial UK MPG, L/100km, and km/L
- Annual fuel volume calculation based on 15,000 miles or custom driving distance
- Annual gasoline budget projection based on current local fuel prices
- Vehicle benchmark comparisons covering hybrids, compact SUVs, and full-size trucks
How to Use Fuel Economy Converter
Select Input Standard
Choose between US MPG, UK MPG, L/100km, or km/L.
Enter Consumption Value
Type the fuel economy rating of your vehicle.
Configure Annual Mileage
Optionally set your expected annual driving distance and fuel price.
Inspect Cross-Standard Matrix
View instant conversions and annual fuel cost projections.
Privacy & In-Browser Execution Guarantee
100% client-side calculation. Your data never leaves your browser.
Frequently Asked Questions
Why are US MPG and UK MPG different?
A US liquid gallon is 3.785 liters, while an Imperial (UK) gallon is 4.546 liters (about 20% larger). Therefore, the same vehicle achieves a higher MPG number in the UK.
How do you convert MPG to L/100km?
Divide 235.215 by the US MPG figure to get L/100km. For UK MPG, divide 282.481 by UK MPG.