Formula to convert 11 liters to gallons is to multiply 11 by 0.264172 (this is the value for 1 liter to gallon).
Convert 11 Liters to Gallons results
11 x 0.264172052 = 2.9058925764
11 l = 2.91 gal
To conclude the answer for 11 liters is two point ninety one gallons