Formula to convert 13 liters to gallons is to multiply 13 by 0.264172 (this is the value for 1 liter to gallon).
Convert 13 Liters to Gallons results
13 x 0.264172052 = 3.4342366812
13 l = 3.43 gal
To conclude the answer for 13 liters is three point forty three gallons