Formula to convert 16 liters to gallons is to multiply 16 by 0.264172 (this is the value for 1 liter to gallon).
Convert 16 Liters to Gallons results
16 x 0.264172052 = 4.2267528384
16 l = 4.23 gal
To conclude the answer for 16 liters is four point twenty three gallons