Formula to convert 5.4 liters to gallons is to multiply 5.4 by 0.264172 (this is the value for 1 liter to gallon).
Convert 5.4 Liters to Gallons results
5.4 x 0.264172052 = 1.42652908296
5.4 l = 1.43 gal
To conclude the answer for 5.4 liters is one point forty three gallons