Formula to convert 13.9 liters to gallons is to multiply 13.9 by 0.264172 (this is the value for 1 liter to gallon).
Convert 13.9 Liters to Gallons results
13.9 x 0.264172052 = 3.67199152836
13.9 l = 3.67 gal
To conclude the answer for 13.9 liters is three point sixty seven gallons