Conversion formula

The conversion factor from fluid ounces to gallons is 0.0078125, which means that 1 fluid ounce is equal to 0.0078125 gallons:

1 fl oz = 0.0078125 gal

To convert 2640 fluid ounces into gallons we have to multiply 2640 by the conversion factor in order to get the volume amount from fluid ounces to gallons. We can also form a simple proportion to calculate the result:

1 fl oz → 0.0078125 gal

2640 fl oz → V_(gal)

Solve the above proportion to obtain the volume V in gallons:

V_(gal) = 2640 fl oz × 0.0078125 gal

V_(gal) = 20.625 gal

The final result is:

2640 fl oz → 20.625 gal

We conclude that 2640 fluid ounces is equivalent to 20.625 gallons:

2640 fluid ounces = 20.625 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.048484848484848 × 2640 fluid ounces.

Another way is saying that 2640 fluid ounces is equal to 1 ÷ 0.048484848484848 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that two thousand six hundred forty fluid ounces is approximately twenty point six two five gallons:

2640 fl oz ≅ 20.625 gal

An alternative is also that one gallon is approximately zero point zero four eight times two thousand six hundred forty fluid ounces.

Conversion table

fluid ounces to gallons chart

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