Formula to convert 40.4 liters to gallons is to multiply 40.4 by 0.264172 (this is the value for 1 liter to gallon).
Convert 40.4 Liters to Gallons results
40.4 x 0.264172052 = 10.67255091696
40.4 l = 10.67 gal
To conclude the answer for 40.4 liters is ten point sixty seven gallons