Formula to convert 1.5 gallons to liters is to multiply 1.5 by 3.75841178 (this is the value for 1 gallon to liter).
Convert 1.5 Gallons to Liters results
1.5 x 3.78541178 = 5.67811767
1.5 gal = 5.68 l
It’s simple, the answer for 1.5 gallons is five point six eight liters