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Fluid Ounces to Cups Converter
8 fluid ounces make 1 US cup. Enter fluid ounces and get the cup measurement instantly.
Quick:
8 fl oz = 1 cup (1 exactly)
16Tablespoons
48Teaspoons
237Milliliters
8Fluid ounces
How many fluid ounces are in a cup?
One US cup holds 8 fluid ounces. Fluid ounces measure volume, so this works for water, milk, juice, oil and any other liquid. It does not work for dry ingredients measured by weight in ounces: 8 ounces of flour is far more than one cup.
cups = fluid ounces ÷ 8
Example: 12 fl oz ÷ 8 = 1½ cups
Example: 12 fl oz ÷ 8 = 1½ cups
Fluid Ounces to Cups chart
| Fluid ounces | Cups |
|---|---|
| 1 fl oz | ⅛ cup (0.125) |
| 2 fl oz | ¼ cup (0.25) |
| 3 fl oz | ⅜ cup (0.375) |
| 4 fl oz | ½ cup (0.5) |
| 6 fl oz | ¾ cup (0.75) |
| 8 fl oz | 1 cup (1) |
| 10 fl oz | 1 ¼ cups (1.25) |
| 12 fl oz | 1 ½ cups (1.5) |
| 16 fl oz | 2 cups (2) |
| 24 fl oz | 3 cups (3) |
| 32 fl oz | 4 cups (4) |
Frequently asked questions
How many cups is 8 fl oz?
8 fluid ounces is exactly 1 cup.
How many cups is 16 fl oz?
16 fluid ounces is 2 cups.
How many cups is 12 fl oz?
12 fluid ounces is 1½ cups.
Are ounces and fluid ounces the same?
No. Fluid ounces measure volume and ounces measure weight. They only match for water-like liquids.
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Last updated: November 2026. Results are for cooking and baking and are rounded for everyday kitchen use.