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 400.9 cups into gallons we have to multiply 400.9 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

400.9 cup → V_(gal)

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

V_(gal) = 400.9 cup × 0.0625 gal

V_(gal) = 25.05625 gal

The final result is:

400.9 cup → 25.05625 gal

We conclude that 400.9 cups is equivalent to 25.05625 gallons:

400.9 cups = 25.05625 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.039910202045398 × 400.9 cups.

Another way is saying that 400.9 cups is equal to 1 ÷ 0.039910202045398 gallons.

Approximate result

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

400.9 cup ≅ 25.056 gal

An alternative is also that one gallon is approximately zero point zero four times four hundred point nine 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