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Ounces to Cups Converter
Convert US fluid ounces to US cups instantly, with the formula and a quick reference table.
Grams to Cups Converter
Convert grams to US cups for flour, sugar, butter and other baking ingredients.
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How to use this calculator
Enter your values. The result updates as you type; press Calculate to confirm and jump to the result on mobile. Use Share to send the calculator with your result.
How the conversion works
Volume and weight can only be converted with the ingredient’s density. Cups = grams ÷ grams per cup. Example: 250 g of all-purpose flour ÷ 125 g/cup = 2 cups. The densities here are typical values used in baking references for US customary cups (236.6 mL); flour ranges from about 120 to 130 g per cup depending on technique. Choose “Custom density” to use the figure from your recipe or package.
| Ingredient | g / cup | g / tbsp | g / tsp |
|---|---|---|---|
| Water | 236.6 | 14.8 | 4.9 |
| All-purpose flour (spooned & leveled) | 125 | 7.8 | 2.6 |
| Bread flour | 127 | 7.9 | 2.6 |
| Granulated sugar | 200 | 12.5 | 4.2 |
| Brown sugar (packed) | 213 | 13.3 | 4.4 |
| Powdered sugar | 120 | 7.5 | 2.5 |
| Butter | 227 | 14.2 | 4.7 |
| Vegetable oil | 218 | 13.6 | 4.5 |
| Milk | 245 | 15.3 | 5.1 |
| Honey | 340 | 21.3 | 7.1 |
| White rice (uncooked) | 185 | 11.6 | 3.9 |
| Rolled oats | 85 | 5.3 | 1.8 |
| Cocoa powder | 85 | 5.3 | 1.8 |
| Table salt | 292 | 18.3 | 6.1 |
Frequently asked questions
How many cups is 100 g of sugar?
About ½ cup (at 200 g per cup).
How many cups is 250 g of flour?
About 2 cups at 125 g per cup.
About this tool
- Written by
- [Author: to be assigned]
- Reviewed by
- Formula tests passed · human review pending
- Last updated
- 31 Oct 2026
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