Ounce to Cup Converter
Convert US fluid ounces to cups, UK fluid ounces to UK cups, and mL to US cups with a built-in reference table.
Reviewed October 7, 2026 Runs in your browser — inputs are never stored
cups (US)
2.0000 cups (US)
1 cups (US) = 8.0000 fl oz (US)
US quick reference
| fl oz | cups | mL |
|---|---|---|
| 2 fl oz | ¼ cup | 59.1 |
| 4 fl oz | ½ cup | 118.3 |
| 8 fl oz | 1 cup | 236.6 |
| 16 fl oz | 2 cup | 473.2 |
| 32 fl oz | 4 cup | 946.4 |
This tool provides general unit conversions for everyday and educational use. For regulated, legal, or scientific applications, verify conversion factors against the applicable official standard.
About the Ounce to Cup Converter
The ounce to cup converter changes US fluid ounces into US cups using the exact relationship 1 cup = 8 fl oz. It also handles UK fluid ounces and cups and converts millilitres to US cups. Remember that fluid ounces measure volume, while ounces on a kitchen scale measure weight; they only coincide for water-like liquids.
How to use it
- 1Choose the conversion type.
- 2Enter the amount.
- 3Read the result in cups (or fluid ounces).
- 4Copy, share or print the result with the buttons below it.
Worked example
16 fl oz ÷ 8 = 2 US cups, and 1.5 cups = 12 fl oz (about 355 mL).
How it works
US Fluid Ounce and Cup
1 US cup = 8 US fluid ounces = 236.588 mL. Note that UK cups (10 fl oz) and metric cups (250 mL) differ from US cups.
Common kitchen fractions
2 tbsp = 1 fl oz; 8 fl oz = 1 cup; 2 cups = 1 pint; 4 cups = 1 quart.
Common use cases
- Following American recipes
- Measuring drinks and liquids
- Converting bottle sizes into cups
Frequently asked questions
A:1 US cup = 16 tablespoons = 48 teaspoons.
A:No. 1 UK cup = 10 UK fl oz ≈ 284 mL, while 1 US cup = 8 US fl oz ≈ 237 mL.
Reviewed for accuracy · Last updated October 7, 2026
Conversion factors are based on internationally defined SI units and standard metric/imperial equivalence tables.
CalcWisee Editorial Team
Calculator development and formula review
CalcWisee is an independent site founded by Ayman. Every calculator is built from a published formula or official definition, tested against hand-worked examples before it goes live, and corrected promptly when a reader reports an issue to ayman@calcwisee.com.
Expertise: Financial mathematics, Health and fitness formulas, Applied mathematics, Unit conversion standards
References & sources
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