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 678.5 cubic feet into gallons we have to multiply 678.5 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

678.5 ft3 → V_(gal)

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

V_(gal) = 678.5 ft3 × 7.4805194805226 gal

V_(gal) = 5075.5324675346 gal

The final result is:

678.5 ft3 → 5075.5324675346 gal

We conclude that 678.5 cubic feet is equivalent to 5075.5324675346 gallons:

678.5 cubic feet = 5075.5324675346 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.00019702366330951 × 678.5 cubic feet.

Another way is saying that 678.5 cubic feet is equal to 1 ÷ 0.00019702366330951 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred seventy-eight point five cubic feet is approximately five thousand seventy-five point five three two gallons:

678.5 ft3 ≅ 5075.532 gal

An alternative is also that one gallon is approximately zero times six hundred seventy-eight 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