Cups to Ounces Converter
Converting cups to ounces depends on the ingredient, because different ingredients have different densities. A cup of flour weighs less than a cup of sugar.
Please select an ingredient for volume ↔ weight conversions.
Select an ingredient to convert
Quick Reference: Cups to Ounces
| Ingredient | 1 cup |
|---|---|
| Plain Flour | 4.41oz |
| Caster Sugar | 7.05oz |
| Butter | 8.01oz |
| Brown Sugar | 7.76oz |
| Cocoa Powder | 3.03oz |
| Honey | 12oz |
| Rolled Oats | 3.17oz |
| Almond Flour | 3.39oz |
| Icing Sugar | 4.23oz |
| Cream Cheese | 8.18oz |
| White Rice (dry) | 6.53oz |
| Peanut Butter | 9.1oz |
Click any ingredient for a full conversion table.
Frequently Asked Questions
Why do cups to ounces conversions vary?▼
Because cups measure volume while ounces measure weight. Different ingredients have different densities, so a cup of flour weighs much less than a cup of honey.
How many ounces in a cup of flour?▼
1 cup of plain flour is approximately 4.41 ounces. See our plain flour conversion page for a full table.
How do I convert cups to ounces for cooking?▼
Use our converter above — select your ingredient, enter the amount, and get an instant result. Different ingredients have different weights per volume, so the ingredient selection is important.