Ounces to Cups Converter
Fast, precise online liquid volume converter for US fluid ounces (fl oz) and cups. Features fraction breakdown, tablespoon equivalents, and instant copying.
Best solution
Default conversion: 8 US fl oz is 1 cup; 16 US tbsp / approximately 236.59 mL.
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Methodology & calculation rule
Cups = Fluid Ounces ÷ 8
1 US customary cup = 8 US fluid ounces = 16 US tablespoons. Milliliter equivalents are rounded to two decimal places.
All volume units in this converter are US customary units. The primary decimal is rounded to four places and milliliters to two. For arbitrary inputs, the displayed cup fraction is a nearby fraction with a denominator up to 16, not necessarily an exact equivalent. This does not convert weight ounces or Imperial fluid ounces. NIST unit conversion reference.
Related conversions
| Interval | US cups | Cup fraction |
|---|---|---|
| 1 fl oz | 0.125 | 1/8 cup |
| 2 fl oz | 0.25 | 1/4 cup |
| 3 fl oz | 0.375 | 3/8 cup |
| 4 fl oz | 0.5 | 1/2 cup |
| 5 fl oz | 0.625 | 5/8 cup |
| 6 fl oz | 0.75 | 3/4 cup |
| 7 fl oz | 0.875 | 7/8 cup |
| 8 fl oz | 1 | 1 cup |
| 9 fl oz | 1.125 | 1 1/8 cup |
| 10 fl oz | 1.25 | 1 1/4 cup |
| 11 fl oz | 1.375 | 1 3/8 cup |
| 12 fl oz | 1.5 | 1 1/2 cup |
| 13 fl oz | 1.625 | 1 5/8 cup |
| 14 fl oz | 1.75 | 1 3/4 cup |
| 15 fl oz | 1.875 | 1 7/8 cup |
| 16 fl oz | 2 | 2 cup |
| 17 fl oz | 2.125 | 2 1/8 cup |
| 18 fl oz | 2.25 | 2 1/4 cup |
| 19 fl oz | 2.375 | 2 3/8 cup |
| 20 fl oz | 2.5 | 2 1/2 cup |
| 21 fl oz | 2.625 | 2 5/8 cup |
| 22 fl oz | 2.75 | 2 3/4 cup |
| 23 fl oz | 2.875 | 2 7/8 cup |
| 24 fl oz | 3 | 3 cup |
| 25 fl oz | 3.125 | 3 1/8 cup |
| 26 fl oz | 3.25 | 3 1/4 cup |
| 27 fl oz | 3.375 | 3 3/8 cup |
| 28 fl oz | 3.5 | 3 1/2 cup |
| 29 fl oz | 3.625 | 3 5/8 cup |
| 30 fl oz | 3.75 | 3 3/4 cup |
| 31 fl oz | 3.875 | 3 7/8 cup |
| 32 fl oz | 4 | 4 cup |
Frequently Asked Questions
How do you convert fluid ounces to cups?
Divide the number of fluid ounces by 8. For example, 16 fl oz ÷ 8 = 2 cups.
Is a fluid ounce the same as an ounce of weight?
No. A fluid ounce measures volume; an ounce on a scale measures mass. Converting a weight to cups requires the density of the ingredient. This converter does not perform that calculation.
How many tablespoons are in a cup?
There are exactly 16 tablespoons in 1 US cup (8 fluid ounces × 2 tablespoons per ounce).