Oz to Cups Converter
cups = fl oz ÷ 8 | cups → oz: fl oz = cups × 8
Common Oz to Cups Conversions
The most frequently needed fluid ounces to cups values for everyday cooking, baking, and measuring:
- 1 oz to cups: 1 ÷ 8 = ⅛ cup
- 2 oz to cups: 2 ÷ 8 = ¼ cup
- 4 oz to cups: 4 ÷ 8 = ½ cup
- 6 oz to cups: 6 ÷ 8 = ¾ cup
- 8 oz to cups: 8 ÷ 8 = 1 cup
- 12 oz to cups: 12 ÷ 8 = 1½ cups
- 16 oz to cups: 16 ÷ 8 = 2 cups (1 pint)
- 20 oz to cups: 20 ÷ 8 = 2½ cups
- 24 oz to cups: 24 ÷ 8 = 3 cups
- 32 oz to cups: 32 ÷ 8 = 4 cups (1 quart)
- 48 oz to cups: 48 ÷ 8 = 6 cups
- 64 oz to cups: 64 ÷ 8 = 8 cups (½ gallon)
- 128 oz to cups: 128 ÷ 8 = 16 cups (1 gallon)
Oz to Cups Conversion Chart
Full reference table from 1 fl oz through 128 fl oz (1 gallon) with pint, quart, and gallon equivalents:
| Fluid Oz (fl oz) | Cups | Pints | Quarts | Gallons |
|---|---|---|---|---|
| 1 fl oz | ⅛ cup | 1/16 pt | 1/32 qt | 1/128 gal |
| 2 fl oz | ¼ cup | ⅛ pt | 1/16 qt | — |
| 4 fl oz | ½ cup | ¼ pt | ⅛ qt | 1/32 gal |
| 6 fl oz | ¾ cup | ⅜ pt | — | — |
| 8 fl oz | 1 cup | ½ pt | ¼ qt | 1/16 gal |
| 10 fl oz | 1¼ cups | ⅝ pt | — | — |
| 12 fl oz | 1½ cups | ¾ pt | ⅜ qt | — |
| 16 fl oz | 2 cups | 1 pt | ½ qt | ⅛ gal |
| 20 fl oz | 2½ cups | 1¼ pt | ⅝ qt | — |
| 24 fl oz | 3 cups | 1½ pt | ¾ qt | — |
| 32 fl oz | 4 cups | 2 pt | 1 qt | ¼ gal |
| 40 fl oz | 5 cups | 2½ pt | 1¼ qt | — |
| 48 fl oz | 6 cups | 3 pt | 1½ qt | ⅜ gal |
| 64 fl oz | 8 cups | 4 pt | 2 qt | ½ gal |
| 96 fl oz | 12 cups | 6 pt | 3 qt | ¾ gal |
| 128 fl oz | 16 cups | 8 pt | 4 qt | 1 gal |
How to Convert Oz to Cups
Dividing by 8 is all it takes — one of the simplest conversions in the US customary system:
Worked Examples
- 10 oz to cups: 10 ÷ 8 = 1.25 cups (1¼ cups)
- 36 oz to cups: 36 ÷ 8 = 4.5 cups
- 2.5 cups to oz: 2.5 × 8 = 20 fl oz
Cooking & Baking Applications
Reading Canned Goods
Standard US soup cans hold about 10.5–14.5 fl oz (1.3–1.8 cups). When a recipe calls for "1 cup of tomato soup," you need 8 fl oz — most cans contain more than one cup. Knowing oz-to-cups prevents using too much or too little.
Scaling Recipes
When a recipe yields 2 cups of sauce but you need 5 cups, you're scaling by 2.5×. That means if the original called for 4 fl oz of vinegar, the scaled version needs 4 × 2.5 = 10 fl oz. Working in fl oz then converting back to cups at the end keeps scaling arithmetic cleaner.
Measuring Without a Cup
If you only have a measuring jug marked in fl oz, 1 cup = 8 fl oz. Half a cup = 4 fl oz. A third of a cup ≈ 2.67 fl oz. These anchor values let you use any measuring tool interchangeably.
From Oz and Cups to Gallons
Since 1 gallon = 128 fl oz = 16 cups, converting from cups to gallons is equally straightforward: divide cups by 16. A recipe that makes "12 cups" of soup = 12 ÷ 16 = 0.75 gallons = 96 fl oz.
For large-batch gallon calculations, use our oz to gallon converter. For the complete unit hierarchy, see: Liquid Measurement Conversion Chart.
Also useful: Cups to Oz Converter for going in the other direction.
Official US volume measurement standards: National Institute of Standards and Technology (NIST).