Formula to convert 78 liters to gallons is to multiply 78 by 0.264172 (this is the value for 1 liter to gallon).
Convert 78 Liters to Gallons results
78 x 0.264172052 = 20.6054200872
78 l = 20.61 gal
To conclude the answer for 78 liters is twenty point sixty one gallons