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 1638 gallons into cups we have to multiply 1638 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

1638 gal → V_(cup)

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

V_(cup) = 1638 gal × 16 cup

V_(cup) = 26208 cup

The final result is:

1638 gal → 26208 cup

We conclude that 1638 gallons is equivalent to 26208 cups:

1638 gallons = 26208 cups

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cup is equal to 3.8156288156288E-5 × 1638 gallons.

Another way is saying that 1638 gallons is equal to 1 ÷ 3.8156288156288E-5 cups.

Approximate result

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

1638 gal ≅ 26208 cup

An alternative is also that one cup is approximately zero times one thousand six hundred thirty-eight 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