Formula to convert 4.5 gallons to liters is to multiply 4.5 by 3.75841178 (this is the value for 1 gallon to liter).
Convert 4.5 Gallons to Liters results
4.5 x 3.78541178 = 17.03435301
4.5 gal = 17.03 l
It’s simple, the answer for 4.5 gallons is seventeen point zero three liters