Formula to convert 9.1 liters to gallons is to multiply 9.1 by 0.264172 (this is the value for 1 liter to gallon).
Convert 9.1 Liters to Gallons results
9.1 x 0.264172052 = 2.40396567684
9.1 l = 2.4 gal
To conclude the answer for 9.1 liters is two point four gallons