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 687 gallons into cubic feet we have to multiply 687 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

687 gal → V_(ft3)

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

V_(ft3) = 687 gal × 0.1336805555555 ft3

V_(ft3) = 91.838541666629 ft3

The final result is:

687 gal → 91.838541666629 ft3

We conclude that 687 gallons is equivalent to 91.838541666629 cubic feet:

687 gallons = 91.838541666629 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 0.010888674644138 × 687 gallons.

Another way is saying that 687 gallons is equal to 1 ÷ 0.010888674644138 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-seven gallons is approximately ninety-one point eight three nine cubic feet:

687 gal ≅ 91.839 ft3

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