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 685 gallons into cubic feet we have to multiply 685 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

685 gal → V_(ft3)

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

V_(ft3) = 685 gal × 0.1336805555555 ft3

V_(ft3) = 91.571180555518 ft3

The final result is:

685 gal → 91.571180555518 ft3

We conclude that 685 gallons is equivalent to 91.571180555518 cubic feet:

685 gallons = 91.571180555518 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 0.010920466394923 × 685 gallons.

Another way is saying that 685 gallons is equal to 1 ÷ 0.010920466394923 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-five gallons is approximately ninety-one point five seven one cubic feet:

685 gal ≅ 91.571 ft3

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