Formula to convert 64.6 liters to gallons is to multiply 64.6 by 0.264172 (this is the value for 1 liter to gallon).
Convert 64.6 Liters to Gallons results
64.6 x 0.264172052 = 17.06551458504
64.6 l = 17.07 gal
To conclude the answer for 64.6 liters is seventeen point zero seven gallons