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 128 gallons into cups we have to multiply 128 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

128 gal → V_(cup)

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

V_(cup) = 128 gal × 16 cup

V_(cup) = 2048 cup

The final result is:

128 gal → 2048 cup

We conclude that 128 gallons is equivalent to 2048 cups:

128 gallons = 2048 cups

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cup is equal to 0.00048828125 × 128 gallons.

Another way is saying that 128 gallons is equal to 1 ÷ 0.00048828125 cups.

Approximate result

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

128 gal ≅ 2048 cup

An alternative is also that one cup is approximately zero times one hundred twenty-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