Sumwise

US cups to US fluid ounces

US fluid ounces = US cups × 8

Reverse: US fluid ounces to US cups

How to convert US cups to US fluid ounces

One US cup is 8 US fluid ounces, so multiply the number of US cups by 8. For example, 20 US cups is 20 × 8 = 160 US fluid ounces. To go back, divide by the same number, or multiply by 0.125.

Quick estimate

Multiplying by about 8 gets within 0.0% 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 cupsUS fluid ounces
1 cup8 floz
2 cup16 floz
3 cup24 floz
4 cup32 floz
5 cup40 floz
6 cup48 floz
7 cup56 floz
8 cup64 floz
9 cup72 floz
10 cup80 floz
11 cup88 floz
12 cup96 floz
13 cup104 floz
14 cup112 floz
15 cup120 floz
16 cup128 floz
17 cup136 floz
18 cup144 floz
19 cup152 floz
20 cup160 floz
25 cup200 floz
30 cup240 floz
40 cup320 floz
50 cup400 floz
60 cup480 floz
70 cup560 floz
75 cup600 floz
80 cup640 floz
90 cup720 floz
100 cup800 floz
120 cup960 floz
150 cup1,200 floz
200 cup1,600 floz
250 cup2,000 floz
300 cup2,400 floz
400 cup3,200 floz
500 cup4,000 floz
750 cup6,000 floz
1,000 cup8,000 floz
1,500 cup12,000 floz
2,000 cup16,000 floz
5,000 cup40,000 floz
10,000 cup80,000 floz

Questions

How many US fluid ounces are in a US cup?

8 US fluid ounces.

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

Put the value in A1 and type =A1*8, 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.