Conversion formula

The conversion factor from cups to gallons is 0.0625, which means that 1 cup is equal to 0.0625 gallons:

1 cup = 0.0625 gal

To convert 666.5 cups into gallons we have to multiply 666.5 by the conversion factor in order to get the volume amount from cups to gallons. We can also form a simple proportion to calculate the result:

1 cup → 0.0625 gal

666.5 cup → V_(gal)

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

V_(gal) = 666.5 cup × 0.0625 gal

V_(gal) = 41.65625 gal

The final result is:

666.5 cup → 41.65625 gal

We conclude that 666.5 cups is equivalent to 41.65625 gallons:

666.5 cups = 41.65625 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.024006001500375 × 666.5 cups.

Another way is saying that 666.5 cups is equal to 1 ÷ 0.024006001500375 gallons.

Approximate result

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

666.5 cup ≅ 41.656 gal

An alternative is also that one gallon is approximately zero point zero two four times six hundred sixty-six point five cups.

Conversion table

cups to gallons chart

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