Sumwise

US fluid ounces to US cups

US cups = US fluid ounces × 0.125

Reverse: US cups to US fluid ounces

How to convert US fluid ounces to US cups

One US fluid ounce is 0.125 US cups, so multiply the number of US fluid ounces by 0.125. For example, 20 US fluid ounces is 20 × 0.125 = 2.5 US cups. To go back, divide by the same number, or multiply by 8.

Quick estimate

Multiplying by about 0.1 gets within 20.0% of the exact answer, which is enough to check that a result makes sense.

Where it comes up

Volume conversions come up in recipes, fuel economy, drink and bottle sizes, garden and pool water, and engine sizes.

US fluid ouncesUS cups
1 floz0.125 cup
2 floz0.25 cup
3 floz0.375 cup
4 floz0.5 cup
5 floz0.625 cup
6 floz0.75 cup
7 floz0.875 cup
8 floz1 cup
9 floz1.125 cup
10 floz1.25 cup
11 floz1.375 cup
12 floz1.5 cup
13 floz1.625 cup
14 floz1.75 cup
15 floz1.875 cup
16 floz2 cup
17 floz2.125 cup
18 floz2.25 cup
19 floz2.375 cup
20 floz2.5 cup
25 floz3.125 cup
30 floz3.75 cup
40 floz5 cup
50 floz6.25 cup
60 floz7.5 cup
70 floz8.75 cup
75 floz9.375 cup
80 floz10 cup
90 floz11.25 cup
100 floz12.5 cup
120 floz15 cup
150 floz18.75 cup
200 floz25 cup
250 floz31.25 cup
300 floz37.5 cup
400 floz50 cup
500 floz62.5 cup
750 floz93.75 cup
1,000 floz125 cup
1,500 floz187.5 cup
2,000 floz250 cup
5,000 floz625 cup
10,000 floz1,250 cup

Questions

How many US cups are in a US fluid ounce?

0.125 US cups.

How do I convert US fluid ounces to US cups in a spreadsheet?

Put the value in A1 and type =A1*0.125, then fill the formula down the column.

Are the values in the table exact?

They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.