Formula to convert 31 liters to gallons is to multiply 31 by 0.264172 (this is the value for 1 liter to gallon).
Convert 31 Liters to Gallons results
31 x 0.264172052 = 8.1893336244
31 l = 8.19 gal
To conclude the answer for 31 liters is eight point nineteen gallons