Formula to convert 10.5 liters to gallons is to multiply 10.5 by 0.264172 (this is the value for 1 liter to gallon).
Convert 10.5 Liters to Gallons results
10.5 x 0.264172052 = 2.7738065502
10.5 l = 2.77 gal
To conclude the answer for 10.5 liters is two point seventy seven gallons