Fuel Conversion Calculator is a very simple to use app, which features: Miles per US Gallon, mpg US. Miles per UK Gallon, mpg UK. Miles per Liter, mpl. Kilometers per Liter, km/l. Liters per 100 km, l/100km. Live conversions. Takes both whole and decimal input. Simple and elegant design. Runs on both phones and tablets. Fits on any screen size automatically.