Converters
Fuel Economy Converter
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Convert fuel economy between L/100km, MPG (US), MPG (UK), and km/L instantly. Free, no account required, runs entirely in your browser.
Slik bruker du dette verktøyet
- Enter a fuel-economy figure.
- Select the unit you entered — L/100km, MPG (US), MPG (UK), or km/L.
- Read the equivalents, remembering L/100km is inverse to MPG.
Enter a value in any unit — all others update instantly.
L/100kmLitres per 100 km
MPG (US)Miles per gallon (US)
MPG (UK)Miles per gallon (UK)
km/LKilometres per litre
Ofte stilte spørsmål
- Why isn't MPG to L/100km a simple multiply?
- Because they are inverse measures: MPG is distance per fuel, L/100km is fuel per distance. The relationship is L/100km = 235.215 ÷ MPG (US), so doubling MPG halves L/100km.
- What are the conversion constants?
- L/100km = 235.215 ÷ MPG(US) and = 282.481 ÷ MPG(UK). The two MPG figures differ because a US gallon is 3.785 L while an Imperial gallon is 4.546 L.
- How does km/L fit in?
- km/L is distance per fuel like MPG, so L/100km = 100 ÷ (km/L). 10 km/L equals 10 L/100km; 20 km/L equals 5 L/100km.
- Are my figures transmitted?
- No. The inverse conversion is computed in your browser with fixed constants; nothing is uploaded.