Formula to convert 12 liters to gallons is to multiply 12 by 0.264172 (this is the value for 1 liter to gallon).
Convert 12 Liters to Gallons results
12 x 0.264172052 = 3.1700646288
12 l = 3.17 gal
To conclude the answer for 12 liters is three point seventeen gallons