Conversion formula

The conversion factor from cubic feet to gallons is 7.4805194805226, which means that 1 cubic foot is equal to 7.4805194805226 gallons:

1 ft3 = 7.4805194805226 gal

To convert 680.5 cubic feet into gallons we have to multiply 680.5 by the conversion factor in order to get the volume amount from cubic feet to gallons. We can also form a simple proportion to calculate the result:

1 ft3 → 7.4805194805226 gal

680.5 ft3 → V_(gal)

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

V_(gal) = 680.5 ft3 × 7.4805194805226 gal

V_(gal) = 5090.4935064956 gal

The final result is:

680.5 ft3 → 5090.4935064956 gal

We conclude that 680.5 cubic feet is equivalent to 5090.4935064956 gallons:

680.5 cubic feet = 5090.4935064956 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.000196444607723 × 680.5 cubic feet.

Another way is saying that 680.5 cubic feet is equal to 1 ÷ 0.000196444607723 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred eighty point five cubic feet is approximately five thousand ninety point four nine four gallons:

680.5 ft3 ≅ 5090.494 gal

An alternative is also that one gallon is approximately zero times six hundred eighty point five cubic feet.

Conversion table

cubic feet to gallons chart

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