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How Many Ounces In a Cup?

Ounces to Cups
Ounces to Cups

The fluid ounce has two different measurements – there’s the US fluid ounce and the UK fluid ounce. It can get complicated, especially if you’re using a US recipe and based in the UK, or vice-versa.

Let’s look at the conversions of each:

US recipes – cups to ounces

1 US cup (236.59mL) = 8 US fluid ounces
1 US cup (236.59mL) = 8.327 UK fluid ounces

Old UK recipes – cups to ounces

1 UK cup (284.13mL) = 10 UK fluid ounces
1 UK cup (284.13mL) = 9.607 US fluid ounces

Rest of world recipes

1 international metric cup (250mL) = 8.454 US fluid ounces
1 international metric cup (250mL) = 8.799 UK fluid ounces