Formula to convert 66 liters to gallons is to multiply 66 by 0.264172 (this is the value for 1 liter to gallon).
Convert 66 Liters to Gallons results
66 x 0.264172052 = 17.4353554584
66 l = 17.44 gal
To conclude the answer for 66 liters is seventeen point forty four gallons