Formula to convert 49.9 liters to gallons is to multiply 49.9 by 0.264172 (this is the value for 1 liter to gallon).
Convert 49.9 Liters to Gallons results
49.9 x 0.264172052 = 13.18218541476
49.9 l = 13.18 gal
To conclude the answer for 49.9 liters is thirteen point eighteen gallons