Oz to Cups

Convert Fluid Ounces to Cups

"Oz to Cups" Calculator

Convert
fl oz to Cups

How to convert US fluid ounces to US cups

Worked example: 32 fl oz = 4 cups

fl ozcup02040024632 fl oz4 cups

32 fl oz ÷ 8 = 4 cups

Rule: US cups = US fluid ounces ÷ 8 — exact: 1 cup = 8 fl oz.

See Also

FAQ

How many fluid ounces are in one US cup?

One US customary cup holds exactly 8 US fluid ounces (1 cup = 8 fl oz), so to convert fluid ounces to cups you divide by 8.

What is the formula to convert fluid ounces to cups?

To convert US fluid ounces to cups, divide the fluid ounce value by 8. For example, 32 fl oz ÷ 8 = 4 cups.

Is this the fluid ounce of volume or the weight ounce?

This converter uses the US fluid ounce, a unit of volume. It is not the weight ounce (28.35 g) used for dry ingredients — for those, weight matters and a cup is not a fixed number of weight ounces.

Is a US cup the same as a metric cup?

No. The US customary cup is 8 US fl oz (about 236.6 ml), the US "legal" cup on nutrition labels is 240 ml, and the metric cup used in Australia is 250 ml. This tool uses the US customary cup of 8 fluid ounces.