Conversion formula

The conversion factor from fluid ounces to cubic inches is 1.804687499996, which means that 1 fluid ounce is equal to 1.804687499996 cubic inches:

1 fl oz = 1.804687499996 in3

To convert 4.5 fluid ounces into cubic inches we have to multiply 4.5 by the conversion factor in order to get the volume amount from fluid ounces to cubic inches. We can also form a simple proportion to calculate the result:

1 fl oz → 1.804687499996 in3

4.5 fl oz → V_(in3)

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

V_(in3) = 4.5 fl oz × 1.804687499996 in3

V_(in3) = 8.1210937499822 in3

The final result is:

4.5 fl oz → 8.1210937499822 in3

We conclude that 4.5 fluid ounces is equivalent to 8.1210937499822 cubic inches:

4.5 fluid ounces = 8.1210937499822 cubic inches

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cubic inch is equal to 0.12313612313639 × 4.5 fluid ounces.

Another way is saying that 4.5 fluid ounces is equal to 1 ÷ 0.12313612313639 cubic inches.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four point five fluid ounces is approximately eight point one two one cubic inches:

4.5 fl oz ≅ 8.121 in3

An alternative is also that one cubic inch is approximately zero point one two three times four point five fluid ounces.

Conversion table

fluid ounces to cubic inches chart

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