Fuel Efficiency Converter

Our free online fuel efficiency converter helps you convert between different fuel consumption units. Convert between MPG (Miles per Gallon), L/100km (Liters per 100 Kilometers), km/L (Kilometers per Liter), and more. Perfect for comparing fuel efficiency across different regions and standards. All calculations are performed securely in your browser.

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Frequently Asked Questions

What fuel efficiency units can I convert between?
You can convert between kilometers per liter (km/L), liters per 100 kilometers (L/100km), miles per gallon (MPG), and gallons per 100 miles. The converter supports both metric and imperial measurements.
Why are there different ways to measure fuel efficiency?
Different regions use different units: Europe commonly uses L/100km, the US uses MPG, and some countries use km/L. L/100km and gallons/100 miles show fuel consumption (lower is better), while MPG and km/L show efficiency (higher is better).
How accurate are the fuel efficiency conversions?
Our conversions use precise mathematical formulas and maintain accuracy up to 2 decimal places. For example, 1 km/L is exactly 235.215 MPG, and we use these exact conversion ratios.
Which fuel efficiency metric should I use?
Use the metric common in your region: L/100km in Europe, MPG in the US, km/L in many Asian countries. L/100km is becoming more common globally as it provides a more linear representation of fuel consumption.
Why do the numbers seem inverse in some conversions?
Some metrics (L/100km, gal/100mi) measure consumption (fuel used per distance), while others (MPG, km/L) measure efficiency (distance per fuel used). This creates an inverse relationship - as one increases, the other decreases.