Formula to convert 18 liters to gallons is to multiply 18 by 0.264172 (this is the value for 1 liter to gallon).
Convert 18 Liters to Gallons results
18 x 0.264172052 = 4.7550969432
18 l = 4.76 gal
To conclude the answer for 18 liters is four point seventy six gallons