Ounces to Cups Converter
Distinguish between dry weight ounces (oz) and liquid fluid ounces (fl oz) when converting to cups.
Interactive Ounces to Cups Converter
Convert fluid ounces (fl oz) into cups cleanly. Exactly 8 fluid ounces make 1 standard US cup.
Equivalent Across All 5 Cup Standards
Cup volumes vary worldwide by regionCrucial Kitchen Distinction: Fluid Ounces vs. Dry Weight Ounces
Are you measuring liquid volume or dry weight?
Fluid Ounces (fl oz): Measure liquid volume. 8 fluid ounces always equal 1 US cup, regardless of what liquid is inside (water, milk, broth, or olive oil).
Dry Ounces (oz by weight): Measure mass on a digital scale (1 oz = 28.35 grams). Because dry ingredients have different densities, 8 ounces of dry flour equals ~1.8 cups, while 8 ounces of granulated sugar equals ~1.1 cups.
How to Convert Fluid Ounces to Cups: Formula & Method
US Cups = Fluid Ounces (fl oz) ÷ 8 - Divide fluid ounces by 8: Because each US cup contains exactly 8 fluid ounces, dividing by 8 gives the total cup count.
- Identify common cup benchmarks:
- 2 fl oz: 2 ÷ 8 = 0.25 (1/4 cup = 4 tablespoons)
- 4 fl oz: 4 ÷ 8 = 0.50 (1/2 cup = 8 tablespoons)
- 6 fl oz: 6 ÷ 8 = 0.75 (3/4 cup = 12 tablespoons)
- 8 fl oz: 8 ÷ 8 = 1.00 (1 full US cup = 16 tablespoons)
- 16 fl oz: 16 ÷ 8 = 2.00 (2 cups = 1 pint)
- 32 fl oz: 32 ÷ 8 = 4.00 (4 cups = 1 quart)
Worked Culinary Examples
Example 1: Liquid Volume (Milk or Broth)
A soup recipe requires 12 fluid ounces of vegetable stock.
- Formula: 12 fl oz ÷ 8 fl oz/cup = 1.5 cups.
- Kitchen equivalent: 1 1/2 cups (or 1 cup plus 8 tablespoons).
Example 2: Dry Ingredient Weight (All-Purpose Flour)
A recipe lists 8 dry ounces of all-purpose flour.
- Convert ounces to grams: 8 oz × 28.3495 g = 226.8 grams.
- Flour density: 1 cup of spooned flour = 125 grams.
- Calculate cups: 226.8 g ÷ 125 g/cup = 1.81 cups.
Quick Reference Conversion Table: Fluid Ounces to Cups
| Fluid Ounces (fl oz) | US Customary Cups | Fractional Cup | Tablespoons (tbsp) | Milliliters (mL) |
|---|---|---|---|---|
| 1 fl oz | 0.125 cup | 1/8 cup | 2 tbsp | 29.6 mL |
| 2 fl oz | 0.25 cup | 1/4 cup | 4 tbsp | 59.1 mL |
| 3 fl oz | 0.375 cup | 3/8 cup | 6 tbsp | 88.7 mL |
| 4 fl oz | 0.5 cup | 1/2 cup | 8 tbsp | 118.3 mL |
| 6 fl oz | 0.75 cup | 3/4 cup | 12 tbsp | 177.4 mL |
| 8 fl oz | 1 cup | 1 cup | 16 tbsp | 236.6 mL |
| 10 fl oz | 1.25 cup | 1 1/4 cup | 20 tbsp | 295.7 mL |
| 12 fl oz | 1.5 cup | 1 1/2 cup | 24 tbsp | 354.9 mL |
| 16 fl oz | 2 cup | 2 cup | 32 tbsp | 473.2 mL |
| 20 fl oz | 2.5 cup | 2 1/2 cup | 40 tbsp | 591.5 mL |
| 24 fl oz | 3 cup | 3 cup | 48 tbsp | 709.8 mL |
| 32 fl oz | 4 cup | 4 cup | 64 tbsp | 946.4 mL |
| 48 fl oz | 6 cup | 6 cup | 96 tbsp | 1419.5 mL |
| 64 fl oz | 8 cup | 8 cup | 128 tbsp | 1892.7 mL |
Common Ounces to Cups Pitfalls
The "Pint's a Pound the World Around" Myth
This old rhyme only holds true for water and liquids with similar density (16 fl oz of water weighs approximately 16 oz or 1 pound). 16 fluid ounces of honey weighs 24 ounces (1.5 lbs), while 16 fluid ounces of flour weighs only ~8.8 ounces.
British Imperial Fluid Ounces vs US Fluid Ounces
1 US fluid ounce is 29.57 mL. 1 British Imperial fluid ounce is 28.41 mL. In the UK, an Imperial pint contains 20 Imperial fluid ounces (568 mL), whereas a US pint is 16 US fluid ounces (473 mL).
Dry Measuring Cup Markings
Never try to read fluid ounces inside nested metal or plastic dry measuring cups. Always pour liquids into clear glass or plastic pitchers with calibrated fluid ounce markings on the side.
Dairy Cans and Jars
Canned goods like evaporated milk or sweetened condensed milk often list net weight in ounces (e.g., 14 oz can) on the label, which is heavier than 14 fluid ounces because of the concentrated milk sugars.