Formula to convert 15.7 liters to gallons is to multiply 15.7 by 0.264172 (this is the value for 1 liter to gallon).
Convert 15.7 Liters to Gallons results
15.7 x 0.264172052 = 4.14750122268
15.7 l = 4.15 gal
To conclude the answer for 15.7 liters is four point fifteen gallons