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 300 gallons into cubic feet we have to multiply 300 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

300 gal → V_(ft3)

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

V_(ft3) = 300 gal × 0.1336805555555 ft3

V_(ft3) = 40.10416666665 ft3

The final result is:

300 gal → 40.10416666665 ft3

We conclude that 300 gallons is equivalent to 40.10416666665 cubic feet:

300 gallons = 40.10416666665 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 0.024935064935075 × 300 gallons.

Another way is saying that 300 gallons is equal to 1 ÷ 0.024935064935075 cubic feet.

Approximate result

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

300 gal ≅ 40.104 ft3

An alternative is also that one cubic foot is approximately zero point zero two five times three hundred 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