Cups to Oz Converter

As the name implies, Omni's cups to oz converter conveniently converts any quantity in cups to US fl oz and vice versa.

Clear
Result8 fl oz1 cup converted
1 cup equals8 fl oz
1 fl oz equals0.125 cup

Cup (US) to fluid ounce (US) reference

cup (US)fluid ounce (US)
1 cup8 fl oz
2 cup16 fl oz
5 cup40 fl oz
10 cup80 fl oz
25 cup200 fl oz
50 cup400 fl oz
100 cup800 fl oz
500 cup4,000 fl oz
1,000 cup8,000 fl oz

How to convert cup (US) to fluid ounce (US)

One cup (US) equals 8 fl oz, so multiply the number of cup (US)s by 8:

fl oz = cup × 8

Going the other way

One fluid ounce (US) equals 0.125 cup, so to convert back:

cup = fl oz × 0.125

Both directions are shown in the results above, and the drop-downs let you convert between any pair of volume units — not just these two.