Ounces to Cups Converter

Enter a value in fluid ounces and choose your cup type (US, Imperial, or Metric) to get an instant conversion. The Ounces to Cups Converter shows you the equivalent cups result along with a handy reference for common fractions. Works for water, milk, oil, and other kitchen liquids.

fl oz

Select the cup standard used in your recipe

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Cups

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Fluid Ounces per Cup

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Milliliters (ml)

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Tablespoons

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Common Fluid Ounce to Cup Conversions

Results Table

Frequently Asked Questions

How many fluid ounces are in a US cup?

One US cup equals 8 fluid ounces (fl oz). This is the most common cup standard used in American recipes. To convert fl oz to cups, simply divide the number of fluid ounces by 8.

How do I convert fluid ounces to cups?

To convert fluid ounces to US cups, divide the number of fluid ounces by 8. For example, 16 fl oz ÷ 8 = 2 cups. For Imperial cups, divide by approximately 10; for Metric cups (250 ml), divide by about 8.45.

How much is 6 fl oz in cups?

6 fluid ounces equals 0.75 US cups, or three-quarters of a cup. In Imperial cups, 6 fl oz is about 0.6 cups, and in Metric cups it is approximately 0.709 cups.

How much fl oz is 3 cups?

Three US cups equals 24 fluid ounces. If you are using Imperial cups, 3 cups equals approximately 30 fl oz, and 3 Metric cups equals about 25.36 fl oz.

Are all cups the same size?

No — cup sizes vary by country and standard. A US customary cup holds 8 fl oz (236.6 ml), a US legal cup holds exactly 240 ml, an Imperial cup (used in the UK and Canada historically) holds about 284.1 ml, and a Metric cup (used in Australia and Canada) holds 250 ml. Always check which cup standard your recipe uses.

What is the difference between fluid ounces and dry ounces?

Fluid ounces (fl oz) measure volume, while dry ounces measure weight/mass. When a recipe says '8 fl oz of water', it means volume. When it says '4 oz of flour', it typically means weight. The two are not directly interchangeable because different ingredients have different densities.

How do I convert cups back to fluid ounces?

To convert US cups to fluid ounces, multiply the number of cups by 8. For example, 2.5 cups × 8 = 20 fl oz. For Imperial cups, multiply by about 10; for Metric cups, multiply by approximately 8.454.

How many tablespoons are in a fluid ounce?

There are 2 US tablespoons in 1 US fluid ounce. So 8 fl oz (1 cup) contains 16 tablespoons. This relationship holds for the US system; Imperial tablespoons differ slightly.

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