Why is converting to L/100km so confusing?
Most systems measure 'distance per volume' (how far you can go on one tank). L/100km measures 'volume per distance' (how much fuel you burn over a set distance). This means the math is inverted.
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Fuel Consumption Converter | 1ClickTools
Free online fuel consumption calculator. Convert between miles per gallon (US/UK), km/L, and Liters per 100km. Fast, free, browser-based & 100% private.
Frequently Asked Questions
What's the difference between US and UK mpg?
An Imperial (UK) gallon is roughly 20% larger than a US gallon, meaning a car gets 'higher' mpg in the UK mathematically, even if efficiency is the same.
How is L/100km calculated?
It is calculated by dividing the liters of fuel used by the kilometers traveled, and then multiplying the result by 100.
What is considered good fuel economy?
Generally, anything below 8 L/100km (or above 30 mpg) is considered highly fuel-efficient for a standard non-hybrid gasoline car.
How accurate is this fuel consumption converter tool?
All processing runs entirely in your browser using verified algorithms. Results are computed with full double-precision — no server-side rounding or data transmission occurs.