Formula to convert 2.9 liters to gallons is to multiply 2.9 by 0.264172 (this is the value for 1 liter to gallon).
Convert 2.9 Liters to Gallons results
2.9 x 0.264172052 = 0.76609895196
2.9 l = 0.77 gal
To conclude the answer for 2.9 liters is zero point seventy seven gallons