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 3.1 fluid ounces into cups we have to multiply 3.1 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

3.1 fl oz → V_(cup)

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

V_(cup) = 3.1 fl oz × 0.125 cup

V_(cup) = 0.3875 cup

The final result is:

3.1 fl oz → 0.3875 cup

We conclude that 3.1 fluid ounces is equivalent to 0.3875 cups:

3.1 fluid ounces = 0.3875 cups

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cup is equal to 2.5806451612903 × 3.1 fluid ounces.

Another way is saying that 3.1 fluid ounces is equal to 1 ÷ 2.5806451612903 cups.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that three point one fluid ounces is approximately zero point three eight eight cups:

3.1 fl oz ≅ 0.388 cup

An alternative is also that one cup is approximately two point five eight one times three point one 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