Fuel Efficiency Converter

Convert between different fuel efficiency units with this easy-to-use converter.

Conversion Result

Common Fuel Efficiency Conversions

From To Conversion Factor
1 km/L mpg (US) 2.35215 mpg
1 mpg (US) km/L 0.425144 km/L
1 L/100km mpg (US) 235.215/mpg
1 mpg (UK) mpg (US) 0.832674 mpg
1 km/gal km/L 0.264172 km/L

About Fuel Efficiency Units

Common Units

Kilometers per Liter (km/L): The distance traveled in kilometers using one liter of fuel. Commonly used in most countries outside the US.

Miles per Gallon (mpg): The distance traveled in miles using one gallon of fuel. Used in the United States.

Liters per 100 Kilometers (L/100km): The amount of fuel in liters needed to travel 100 kilometers. Used in Europe and many other countries.

Miles per Gallon (UK): Similar to US mpg but using the larger UK gallon. Used in the United Kingdom.

Kilometers per Gallon (km/gal): The distance traveled in kilometers using one US gallon of fuel.

Miles per Liter (mi/L): The distance traveled in miles using one liter of fuel.

Frequently Asked Questions

A US gallon is equal to 3.78541 liters, while a UK gallon is equal to 4.54609 liters. This means that a UK gallon is about 20% larger than a US gallon. This difference is important when converting between US and UK fuel efficiency measurements.

L/100km is often preferred because it provides a more linear scale for fuel consumption. For example, going from 5 L/100km to 6 L/100km represents the same increase in fuel consumption as going from 10 L/100km to 11 L/100km. This makes it easier to compare fuel efficiency across different vehicles and driving conditions.

Several factors affect fuel efficiency, including driving style, vehicle maintenance, road conditions, traffic, weather, and vehicle type. Aggressive driving, poor maintenance, and heavy traffic can significantly reduce fuel efficiency. Regular maintenance, smooth driving, and proper tire pressure can help improve it.