Ounces to Cups Conversion (Complete Guide + Printable Chart)
If you’ve ever been in the middle of cooking or baking and wondered “How many cups is 8 ounces?” – you’re not alone. Ounces to cups conversion can be confusing, especially since ounces measure both weight and volume depending on the recipe.
This guide breaks it all down for you with clear, easy-to-read charts for liquid ounces, dry ounces, and common ingredients like flour, sugar and butter. Bookmark this page (or grab the free printable at the bottom!) so you never have to pause mid-recipe again.
QUICK OUNCES TO CUPS CONVERSION
- 8 fluid ounces = 1 cup (US)
- 8 ounces by weight ≠ always 1 cup – it depends on the ingredient!
This is the key difference:
- Fluid ounces measure volume (liquids)
- Ounces (oz) for dry ingredients measure weight
Liquid ounces to cups conversion
| Fluid Ounces (fl oz) | Cups (US) | Milliliters (ml) |
|---|---|---|
| 1 fl oz | ⅛ cup | 30 ml |
| 2 fl oz | ¼ cup | 60 ml |
| 4 fl oz | ½ cup | 120 ml |
| 6 fl oz | ¾ cup | 180 ml |
| 8 fl oz | 1 cup | 240 ml |
| 16 fl oz | 2 cups | 480 ml |
| 32 fl oz | 4 cups (1 quart) | 960 ml |
Quick Tip: In US measurements, 1 cup = 8 fluid ounces = 240 ml.
Dry ounces to cups conversion
Dry ounces vary depending on the ingredient. Here’s a quick guide for some of the most common pantry staples:
| Ingredient | 1 Cup | 1 Ounce (by weight) |
|---|---|---|
| All-purpose flour | 120 g (4.25 oz) | ¼ cup |
| Granulated sugar | 200 g (7.1 oz) | ~2 ¼ tbsp |
| Brown sugar (packed) | 220 g (7.75 oz) | ~2 ½ tbsp |
| Butter | 227 g (8 oz) | ½ cup (1 stick) |
| Cocoa powder | 85 g (3 oz) | ⅓ cup |
Note: The easiest way to convert dry ounces to cups is to use a kitchen scale. Weight is much more accurate for baking!
Butter: Ounces to Cups Conversion
Since butter is often measured in both ounces and cups, here’s a quick conversion:
| Ounces | Cups (US) | Sticks (US) |
|---|---|---|
| 4 oz | ½ cup | 1 stick |
| 8 oz | 1 cup | 2 sticks |
| 16 oz | 2 cups | 4 sticks |
Free Printable Ounces to Cups conversion Chart
Want to keep this handy? Download my free Ounces to Cups Conversion Chart and stick it inside a kitchen cabinet for quick reference.
Notes from My Kitchen
This is one of the most common questions I get from readers and for good reason! It’s one of those conversions that can completely change your recipe if you get it wrong. That’s why I always recommend using a kitchen scale when possible. But if you don’t have one, this chart will get you really close.
FAQ: Ounces to Cups
How many cups is 8 oz?
8 fl oz = 1 cup liquid (US). 8 oz by weight = depends on the ingredient.
How many ounces are in 2 cups?
2 cups = 16 fl oz liquid.
How many ounces are in 1 cup of flour?
About 4.25 oz (120 g).
How many ounces are in 1 cup of butter?
1 cup butter = 8 oz = 2 sticks.
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