Formula to convert 81.4 liters to gallons is to multiply 81.4 by 0.264172 (this is the value for 1 liter to gallon).
Convert 81.4 Liters to Gallons results
81.4 x 0.264172052 = 21.50360506536
81.4 l = 21.5 gal
To conclude the answer for 81.4 liters is twenty one point five gallons