Formula to convert 18.1 liters to gallons is to multiply 18.1 by 0.264172 (this is the value for 1 liter to gallon).
Convert 18.1 Liters to Gallons results
18.1 x 0.264172052 = 4.78151414844
18.1 l = 4.78 gal
To conclude the answer for 18.1 liters is four point seventy eight gallons