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 639 gallons into cups we have to multiply 639 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

639 gal → V_(cup)

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

V_(cup) = 639 gal × 16 cup

V_(cup) = 10224 cup

The final result is:

639 gal → 10224 cup

We conclude that 639 gallons is equivalent to 10224 cups:

639 gallons = 10224 cups

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cup is equal to 9.7809076682316E-5 × 639 gallons.

Another way is saying that 639 gallons is equal to 1 ÷ 9.7809076682316E-5 cups.

Approximate result

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

639 gal ≅ 10224 cup

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