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 398 cups into gallons we have to multiply 398 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

398 cup → V_(gal)

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

V_(gal) = 398 cup × 0.0625 gal

V_(gal) = 24.875 gal

The final result is:

398 cup → 24.875 gal

We conclude that 398 cups is equivalent to 24.875 gallons:

398 cups = 24.875 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.040201005025126 × 398 cups.

Another way is saying that 398 cups is equal to 1 ÷ 0.040201005025126 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that three hundred ninety-eight cups is approximately twenty-four point eight seven five gallons:

398 cup ≅ 24.875 gal

An alternative is also that one gallon is approximately zero point zero four times three hundred ninety-eight 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