Formula to convert 18.5 liters to gallons is to multiply 18.5 by 0.264172 (this is the value for 1 liter to gallon).
Convert 18.5 Liters to Gallons results
18.5 x 0.264172052 = 4.8871829694
18.5 l = 4.89 gal
To conclude the answer for 18.5 liters is four point eighty nine gallons