Conversion formula

The conversion factor from gallons to fluid ounces is 128, which means that 1 gallon is equal to 128 fluid ounces:

1 gal = 128 fl oz

To convert 2 gallons into fluid ounces we have to multiply 2 by the conversion factor in order to get the volume amount from gallons to fluid ounces. We can also form a simple proportion to calculate the result:

1 gal → 128 fl oz

2 gal → V(fl oz)

Solve the above proportion to obtain the volume V in fluid ounces:

V(fl oz) = 2 gal × 128 fl oz

V(fl oz) = 256 fl oz

The final result is:

2 gal → 256 fl oz

We conclude that 2 gallons is equivalent to 256 fluid ounces:

2 gallons = 256 fluid ounces

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 fluid ounce is equal to 0.00390625 × 2 gallons.

Another way is saying that 2 gallons is equal to 1 ÷ 0.00390625 fluid ounces.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that two gallons is approximately two hundred fifty-six fluid ounces:

2 gal ≅ 256 fl oz

An alternative is also that one fluid ounce is approximately zero point zero zero four times two gallons.

Conversion table

gallons to fluid ounces chart

For quick reference purposes, below is the conversion table you can use to convert from gallons to fluid ounces

gallons (gal) fluid ounces (fl oz)
3 gallons 384 fluid ounces
4 gallons 512 fluid ounces
5 gallons 640 fluid ounces
6 gallons 768 fluid ounces
7 gallons 896 fluid ounces
8 gallons 1024 fluid ounces
9 gallons 1152 fluid ounces
10 gallons 1280 fluid ounces
11 gallons 1408 fluid ounces
12 gallons 1536 fluid ounces