Fuel Consumption Converter
Convert between L/100km, MPG (US and UK), and km/L.
Convert Fuel Economy Figures
Fuel economy is reported differently around the world: Europe typically uses liters per 100 kilometers (L/100km), the US uses miles per gallon (MPG), the UK uses its own imperial MPG, and some countries use kilometers per liter (km/L). Enter a figure, choose your source and target units, and get an accurate converted value — useful when comparing a car's specs between US, UK, and metric-market listings.
Frequently Asked Questions
Why isn't converting MPG to L/100km a simple multiplication?
L/100km measures fuel used per fixed distance, while MPG measures distance traveled per unit of fuel — they're inversely related, so the conversion requires dividing rather than simply scaling.
Is US MPG the same as UK MPG?
No. A US gallon (3.785 L) is smaller than a UK imperial gallon (4.546 L), so the same MPG figure means a different real-world fuel economy in each country. This converter treats them separately.
What does a lower L/100km number mean?
A lower L/100km value means better fuel economy, since it represents less fuel used to travel 100 kilometers.
What does a higher MPG number mean?
A higher MPG value means better fuel economy, since the vehicle travels farther per gallon of fuel.
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