Formula to convert 12.6 liters to gallons is to multiply 12.6 by 0.264172 (this is the value for 1 liter to gallon).
Convert 12.6 Liters to Gallons results
12.6 x 0.264172052 = 3.32856786024
12.6 l = 3.33 gal
To conclude the answer for 12.6 liters is three point thirty three gallons