Conversion formula

The conversion factor from fluid ounces to cups is 0.125, which means that 1 fluid ounce is equal to 0.125 cups:

1 fl oz = 0.125 cup

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

1 fl oz → 0.125 cup

4.5 fl oz → V_(cup)

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

V_(cup) = 4.5 fl oz × 0.125 cup

V_(cup) = 0.5625 cup

The final result is:

4.5 fl oz → 0.5625 cup

We conclude that 4.5 fluid ounces is equivalent to 0.5625 cups:

4.5 fluid ounces = 0.5625 cups

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cup is equal to 1.7777777777778 × 4.5 fluid ounces.

Another way is saying that 4.5 fluid ounces is equal to 1 ÷ 1.7777777777778 cups.

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 zero point five six three cups:

4.5 fl oz ≅ 0.563 cup

An alternative is also that one cup is approximately one point seven seven eight times four point five fluid ounces.

Conversion table

fluid ounces to cups chart

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