Conversion formula

The conversion factor from cups to gallons is 0.0625, which means that 1 cup is equal to 0.0625 gallons:

1 cup = 0.0625 gal

To convert 308.5 cups into gallons we have to multiply 308.5 by the conversion factor in order to get the volume amount from cups to gallons. We can also form a simple proportion to calculate the result:

1 cup → 0.0625 gal

308.5 cup → V_(gal)

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

V_(gal) = 308.5 cup × 0.0625 gal

V_(gal) = 19.28125 gal

The final result is:

308.5 cup → 19.28125 gal

We conclude that 308.5 cups is equivalent to 19.28125 gallons:

308.5 cups = 19.28125 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.051863857374392 × 308.5 cups.

Another way is saying that 308.5 cups is equal to 1 ÷ 0.051863857374392 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that three hundred eight point five cups is approximately nineteen point two eight one gallons:

308.5 cup ≅ 19.281 gal

An alternative is also that one gallon is approximately zero point zero five two times three hundred eight point five cups.

Conversion table

cups to gallons chart

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