Convert between different fuel efficiency units including MPG, L/100km, km/L, and gallons/100 miles. Free, accurate fuel consumption converter.
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.
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).
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.
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.
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.