How do you convert us cups to us fluid ounces?

To convert us cups to us fluid ounces, multiply by 8. For example, 81 cup is 648 fl oz.

How many us fluid ounces are in a us cup?

There are 8 us fluid ounces in one us cup.

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Converters · Volume

81 US cups to US fluid ounces

81 cup =

648 fl oz

81 us cups equals 648 us fluid ounces

How to convert us cups to us fluid ounces

To get us fluid ounces, multiply by 8.

fl oz = cup × 8

Worked example: 81 × 8 = 648 fl oz.

Going the other way, multiply by 0.125 — one us fluid ounce is 0.125 us cups.

Values near 81 cup

US cup	US fluid ounce
40.5 cup	324 fl oz
79 cup	632 fl oz
80 cup	640 fl oz
82 cup	656 fl oz
83 cup	664 fl oz
162 cup	1296 fl oz

US cup to US fluid ounce — common values

US cup	US fluid ounce
1 cup	8 fl oz
2 cup	16 fl oz
3 cup	24 fl oz
5 cup	40 fl oz
10 cup	80 fl oz
25 cup	200 fl oz
50 cup	400 fl oz
100 cup	800 fl oz

Convert US cup to other units

cup → L cup → mL cup → m³ cup → gal cup → qt cup → pt cup → fl oz cup → tbsp cup → tsp

← Reverse: US fluid ounce to US cup

Questions

How do you convert us cups to us fluid ounces?: To convert us cups to us fluid ounces, multiply by 8. For example, 81 cup is 648 fl oz.
How many us fluid ounces are in a us cup?: There are 8 us fluid ounces in one us cup.
How do you convert us fluid ounces back to us cups?: Go the other way: multiply by 0.125. One us fluid ounce is 0.125 us cups.

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