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 87 cubic feet into gallons we have to multiply 87 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

87 ft3 → V_(gal)

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

V_(gal) = 87 ft3 × 7.4805194805226 gal

V_(gal) = 650.80519480546 gal

The final result is:

87 ft3 → 650.80519480546 gal

We conclude that 87 cubic feet is equivalent to 650.80519480546 gallons:

87 cubic feet = 650.80519480546 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.0015365581098333 × 87 cubic feet.

Another way is saying that 87 cubic feet is equal to 1 ÷ 0.0015365581098333 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that eighty-seven cubic feet is approximately six hundred fifty point eight zero five gallons:

87 ft3 ≅ 650.805 gal

An alternative is also that one gallon is approximately zero point zero zero two times eighty-seven 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