Formula to convert 12.3 liters to gallons is to multiply 12.3 by 0.264172 (this is the value for 1 liter to gallon).
Convert 12.3 Liters to Gallons results
12.3 x 0.264172052 = 3.24931624452
12.3 l = 3.25 gal
To conclude the answer for 12.3 liters is three point twenty five gallons