Formula to convert 77.8 liters to gallons is to multiply 77.8 by 0.264172 (this is the value for 1 liter to gallon).
Convert 77.8 Liters to Gallons results
77.8 x 0.264172052 = 20.55258567672
77.8 l = 20.55 gal
To conclude the answer for 77.8 liters is twenty point fifty five gallons