Formula to convert 42.4 liters to gallons is to multiply 42.4 by 0.264172 (this is the value for 1 liter to gallon).
Convert 42.4 Liters to Gallons results
42.4 x 0.264172052 = 11.20089502176
42.4 l = 11.2 gal
To conclude the answer for 42.4 liters is eleven point two gallons