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 421 gallons into cubic feet we have to multiply 421 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

421 gal → V_(ft3)

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

V_(ft3) = 421 gal × 0.1336805555555 ft3

V_(ft3) = 56.279513888866 ft3

The final result is:

421 gal → 56.279513888866 ft3

We conclude that 421 gallons is equivalent to 56.279513888866 cubic feet:

421 gallons = 56.279513888866 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 0.017768454823094 × 421 gallons.

Another way is saying that 421 gallons is equal to 1 ÷ 0.017768454823094 cubic feet.

Approximate result

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

421 gal ≅ 56.28 ft3

An alternative is also that one cubic foot is approximately zero point zero one eight times four 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