Formula to convert 68.4 liters to gallons is to multiply 68.4 by 0.264172 (this is the value for 1 liter to gallon).
Convert 68.4 Liters to Gallons results
68.4 x 0.264172052 = 18.06936838416
68.4 l = 18.07 gal
To conclude the answer for 68.4 liters is eighteen point zero seven gallons