Conversion formula

The conversion factor from gallons to cups is 16, which means that 1 gallon is equal to 16 cups:

1 gal = 16 cup

To convert 420 gallons into cups we have to multiply 420 by the conversion factor in order to get the volume amount from gallons to cups. We can also form a simple proportion to calculate the result:

1 gal → 16 cup

420 gal → V_(cup)

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

V_(cup) = 420 gal × 16 cup

V_(cup) = 6720 cup

The final result is:

420 gal → 6720 cup

We conclude that 420 gallons is equivalent to 6720 cups:

420 gallons = 6720 cups

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cup is equal to 0.00014880952380952 × 420 gallons.

Another way is saying that 420 gallons is equal to 1 ÷ 0.00014880952380952 cups.

Approximate result

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

420 gal ≅ 6720 cup

An alternative is also that one cup is approximately zero times four hundred twenty gallons.

Conversion table

gallons to cups chart

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