Km/gallon(US) definition

Km/gallon(US) measures fuel economy as the distance a vehicle travels on one unit of fuel, so a higher number means a more efficient vehicle. It uses the US gallon (3.785 liters).

A car that uses 8 liters per 100 km does 47.31765 km/gallon(US).

Because fuel economy units can be inverses of each other, converting between them is not a simple multiplication; the converter above does it for you.