Fuel Consumption Converter
Convert fuel economy between L/100km, km/L, US mpg, UK mpg, and km/gallon with all values shown at once.
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Frequently Asked Questions
What is the difference between MPG and L/100km?
MPG (miles per gallon) measures how far you travel on a unit of fuel — higher is better. L/100km measures fuel used per distance — lower is better. They are inversely related; better fuel economy means higher MPG and lower L/100km.
How do I convert US MPG to UK MPG?
UK gallons are larger than US gallons (1 UK gal = 1.20095 US gal). To convert US MPG to UK MPG, multiply by 1.20095. For example, 30 US MPG ≈ 36 UK MPG.
What is a good fuel economy?
A fuel-efficient modern car typically achieves 5–6 L/100km (47–39 MPG). SUVs and trucks average 8–12 L/100km. Hybrids and EVs (measured as equivalent) often exceed 4 L/100km.