Conversion formula

The conversion factor from cubic feet to gallons is 7.4805194805226, which means that 1 cubic foot is equal to 7.4805194805226 gallons:

1 ft3 = 7.4805194805226 gal

To convert 18 cubic feet into gallons we have to multiply 18 by the conversion factor in order to get the volume amount from cubic feet to gallons. We can also form a simple proportion to calculate the result:

1 ft3 → 7.4805194805226 gal

18 ft3 → V_(gal)

Solve the above proportion to obtain the volume V in gallons:

V_(gal) = 18 ft3 × 7.4805194805226 gal

V_(gal) = 134.64935064941 gal

The final result is:

18 ft3 → 134.64935064941 gal

We conclude that 18 cubic feet is equivalent to 134.64935064941 gallons:

18 cubic feet = 134.64935064941 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.0074266975308611 × 18 cubic feet.

Another way is saying that 18 cubic feet is equal to 1 ÷ 0.0074266975308611 gallons.

Approximate result

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

18 ft3 ≅ 134.649 gal

An alternative is also that one gallon is approximately zero point zero zero seven times eighteen cubic feet.

Conversion table

cubic feet to gallons chart

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