⛽ Fuel Economy Converter
Enter a fuel economy figure in any unit and see it converted to the other three at once. MPG and L/100km are inversely related (higher MPG = lower L/100km), and US gallons are smaller than Imperial (UK) gallons, so the two MPG figures are not interchangeable.
1 US gallon = 3.785411784 L exactly. 1 Imperial (UK) gallon = 4.54609 L exactly — about 20% larger than the US gallon. A car rated "40 MPG" in the US would show a noticeably higher number if the same real-world fuel use were expressed in Imperial MPG.
| MPG (US) | — |
|---|---|
| MPG (Imperial / UK) | — |
| Liters / 100 km | — |
| Kilometers / liter | — |