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 221 gallons into cubic feet we have to multiply 221 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

221 gal → V_(ft3)

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

V_(ft3) = 221 gal × 0.1336805555555 ft3

V_(ft3) = 29.543402777766 ft3

The final result is:

221 gal → 29.543402777766 ft3

We conclude that 221 gallons is equivalent to 29.543402777766 cubic feet:

221 gallons = 29.543402777766 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 0.033848504436754 × 221 gallons.

Another way is saying that 221 gallons is equal to 1 ÷ 0.033848504436754 cubic feet.

Approximate result

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

221 gal ≅ 29.543 ft3

An alternative is also that one cubic foot is approximately zero point zero three four times two hundred twenty-one 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