Conversion formula

The conversion factor from fluid ounces to cubic feet is 0.0010443793402773, which means that 1 fluid ounce is equal to 0.0010443793402773 cubic feet:

1 fl oz = 0.0010443793402773 ft3

To convert 640 fluid ounces into cubic feet we have to multiply 640 by the conversion factor in order to get the volume amount from fluid ounces to cubic feet. We can also form a simple proportion to calculate the result:

1 fl oz → 0.0010443793402773 ft3

640 fl oz → V_(ft3)

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

V_(ft3) = 640 fl oz × 0.0010443793402773 ft3

V_(ft3) = 0.6684027777775 ft3

The final result is:

640 fl oz → 0.6684027777775 ft3

We conclude that 640 fluid ounces is equivalent to 0.6684027777775 cubic feet:

640 fluid ounces = 0.6684027777775 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 1.4961038961045 × 640 fluid ounces.

Another way is saying that 640 fluid ounces is equal to 1 ÷ 1.4961038961045 cubic feet.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred forty fluid ounces is approximately zero point six six eight cubic feet:

640 fl oz ≅ 0.668 ft3

An alternative is also that one cubic foot is approximately one point four nine six times six hundred forty fluid ounces.

Conversion table

fluid ounces to cubic feet chart

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