Formula to convert 11.5 liters to gallons is to multiply 11.5 by 0.264172 (this is the value for 1 liter to gallon).
Convert 11.5 Liters to Gallons results
11.5 x 0.264172052 = 3.0379786026
11.5 l = 3.04 gal
To conclude the answer for 11.5 liters is three point zero four gallons