Conversion formula

The conversion factor from gallons to cubic feet is 0.1336805555555, which means that 1 gallon is equal to 0.1336805555555 cubic feet:

1 gal = 0.1336805555555 ft3

To convert 688 gallons into cubic feet we have to multiply 688 by the conversion factor in order to get the volume amount from gallons to cubic feet. We can also form a simple proportion to calculate the result:

1 gal → 0.1336805555555 ft3

688 gal → V_(ft3)

Solve the above proportion to obtain the volume V in cubic feet:

V_(ft3) = 688 gal × 0.1336805555555 ft3

V_(ft3) = 91.972222222184 ft3

The final result is:

688 gal → 91.972222222184 ft3

We conclude that 688 gallons is equivalent to 91.972222222184 cubic feet:

688 gallons = 91.972222222184 cubic feet

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cubic foot is equal to 0.010872848082155 × 688 gallons.

Another way is saying that 688 gallons is equal to 1 ÷ 0.010872848082155 cubic feet.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred eighty-eight gallons is approximately ninety-one point nine seven two cubic feet:

688 gal ≅ 91.972 ft3

An alternative is also that one cubic foot is approximately zero point zero one one times six hundred eighty-eight gallons.

Conversion table

gallons to cubic feet chart

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