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 139.5 gallons into cubic feet we have to multiply 139.5 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

139.5 gal → V_(ft3)

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

V_(ft3) = 139.5 gal × 0.1336805555555 ft3

V_(ft3) = 18.648437499992 ft3

The final result is:

139.5 gal → 18.648437499992 ft3

We conclude that 139.5 gallons is equivalent to 18.648437499992 cubic feet:

139.5 gallons = 18.648437499992 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 0.053623795559302 × 139.5 gallons.

Another way is saying that 139.5 gallons is equal to 1 ÷ 0.053623795559302 cubic feet.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one hundred thirty-nine point five gallons is approximately eighteen point six four eight cubic feet:

139.5 gal ≅ 18.648 ft3

An alternative is also that one cubic foot is approximately zero point zero five four times one hundred thirty-nine point 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