Formula to convert 64 liters to gallons is to multiply 64 by 0.264172 (this is the value for 1 liter to gallon).
Convert 64 Liters to Gallons results
64 x 0.264172052 = 16.9070113536
64 l = 16.91 gal
To conclude the answer for 64 liters is sixteen point ninety one gallons