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 420 cups into gallons we have to multiply 420 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

420 cup → V_(gal)

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

V_(gal) = 420 cup × 0.0625 gal

V_(gal) = 26.25 gal

The final result is:

420 cup → 26.25 gal

We conclude that 420 cups is equivalent to 26.25 gallons:

420 cups = 26.25 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.038095238095238 × 420 cups.

Another way is saying that 420 cups is equal to 1 ÷ 0.038095238095238 gallons.

Approximate result

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

420 cup ≅ 26.25 gal

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