Formula to convert 15 gallons to liters is to multiply 15 by 3.75841178 (this is the value for 1 gallon to liter).
Convert 15 Gallons to Liters results
15 x 3.78541178 = 56.7811767
15 gal = 56.78 l
It’s simple, the answer for 15 gallons is fifty-six point seven eight liters