Formula to convert 40.9 liters to gallons is to multiply 40.9 by 0.264172 (this is the value for 1 liter to gallon).
Convert 40.9 Liters to Gallons results
40.9 x 0.264172052 = 10.80463694316
40.9 l = 10.8 gal
To conclude the answer for 40.9 liters is ten point eight gallons