## 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 2.5 cubic feet into gallons we have to multiply 2.5 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

2.5 ft3 → V(gal)

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

V(gal) = 2.5 ft3 × 7.4805194805226 gal

V(gal) = 18.701298701306 gal

The final result is:

2.5 ft3 → 18.701298701306 gal

We conclude that 2.5 cubic feet is equivalent to 18.701298701306 gallons:

2.5 cubic feet = 18.701298701306 gallons

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.0534722222222 × 2.5 cubic feet.

Another way is saying that 2.5 cubic feet is equal to 1 ÷ 0.0534722222222 gallons.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that two point five cubic feet is approximately eighteen point seven zero one gallons:

2.5 ft3 ≅ 18.701 gal

An alternative is also that one gallon is approximately zero point zero five three times two point five 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

cubic feet (ft3) gallons (gal)
3.5 cubic feet 26.182 gallons
4.5 cubic feet 33.662 gallons
5.5 cubic feet 41.143 gallons
6.5 cubic feet 48.623 gallons
7.5 cubic feet 56.104 gallons
8.5 cubic feet 63.584 gallons
9.5 cubic feet 71.065 gallons
10.5 cubic feet 78.545 gallons
11.5 cubic feet 86.026 gallons
12.5 cubic feet 93.506 gallons