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 665 gallons into cups we have to multiply 665 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

665 gal → V_(cup)

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

V_(cup) = 665 gal × 16 cup

V_(cup) = 10640 cup

The final result is:

665 gal → 10640 cup

We conclude that 665 gallons is equivalent to 10640 cups:

665 gallons = 10640 cups

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cup is equal to 9.3984962406015E-5 × 665 gallons.

Another way is saying that 665 gallons is equal to 1 ÷ 9.3984962406015E-5 cups.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred sixty-five gallons is approximately ten thousand six hundred forty cups:

665 gal ≅ 10640 cup

An alternative is also that one cup is approximately zero times six hundred sixty-five 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