Cups to Grams Converter
Choose your ingredient, enter a US cup or spoon measure, and get an approximate weight. This baking converter covers 28 ingredients and works in both directions, including grams to cups.
- 28 baking ingredients
- US cups & spoons
- Fractions welcome
How to use the cups to grams converter
Choose the exact ingredient
Select all-purpose flour, packed brown sugar, butter or another listed ingredient. Similar-looking ingredients can have different reference weights.
Enter the quantity and units
Type a decimal or a fraction such as 1/2, 1 1/2 or 1½. Choose the starting unit and the unit you want. Available units are US cups, tablespoons, teaspoons, grams, kilograms, weight ounces and pounds.
Check the preparation note
Read the note beside the result: brown sugar is packed, confectioners’ sugar is unsifted, and walnuts are chopped. If the recipe already gives grams, follow its own weight rather than replacing it with a chart estimate.
Quick cups-to-grams baking chart
| Ingredient & preparation | ½ US cup | 1 US cup | 2 US cups |
|---|---|---|---|
| All-purpose flour | 60 g | 120 g | 240 g |
| Almond flour | 48 g | 96 g | 192 g |
| Granulated sugar | 99 g | 198 g | 396 g |
| Brown sugar · packed | 106.5 g | 213 g | 426 g |
| Confectioners’ sugar · unsifted | 56.5 g | 113 g | 226 g |
| Unsweetened cocoa | 42 g | 84 g | 168 g |
| Butter | 113 g | 226 g | 452 g |
| Chocolate chips | 85 g | 170 g | 340 g |
| Old-fashioned or quick oats | 44.5 g | 89 g | 178 g |
Why one cup does not always equal the same number of grams
A cup measures volume; a gram measures mass. A cup of flour contains air between its particles, while a cup of packed sugar has a different structure and weight. Changing the ingredient changes the conversion. That is why a single cups-to-grams multiplier cannot work for every food.
This tool uses a consistent set of baking reference weights from King Arthur Baking. They are practical approximations, not universal physical constants. Brand, humidity, milling, sifting and packing can change the amount that fits in your cup.
US cups, measuring technique and recipe-specific weights
The volume convention is a US customary cup: 16 tablespoons or 48 teaspoons, approximately 236.588 milliliters. A 250 mL metric cup and an Australian tablespoon are different measures. The ingredient weights are the cited baking chart’s references; they do not redefine a milliliter.
For flour measured by cups, spoon it into the cup and level the top unless the recipe specifies another method. Scooping directly from a compacted bag can produce a heavier measure. A scale helps repeat a measurement, but it cannot correct a conversion based on the wrong ingredient or cup standard.
When to convert, and when to keep the original measurement
Use the converter when a recipe provides cup measures and you want a practical starting weight. Keep the recipe author’s tested gram quantities when they are available, even if they differ from this chart. Small amounts of salt, spices and raising agents may be easier to measure with an appropriate spoon or a scale sensitive enough for the quantity.
This converts one listed ingredient at a time. It does not convert an entire pasted recipe to grams or accept a custom ingredient density. To change the size of a batch, use the recipe scaler; to change the baking pan, start with the pan converter.
Cups to Grams Converter: frequently asked questions
How many grams are in 1 cup of all-purpose flour?
This converter uses 120 grams per US cup, following the selected King Arthur baking reference. Treat it as an approximate chart weight and prefer the recipe’s own tested gram quantity when provided.
How many grams are in half a cup of flour?
Using the 120 g-per-cup reference, 1/2 US cup of all-purpose flour is approximately 60 grams. Selecting a different flour type can change the result.
Why do other flour conversion charts give a different answer?
Charts can use different flour types, filling techniques and reference measurements. Flour weight is not fixed by the volume unit alone. Use one source consistently and follow the original recipe when it specifies weights.
Can I convert grams back into cups?
Yes. Select grams as the starting unit and US cups as the output, then choose the ingredient. The conversion uses that ingredient’s reference weight in reverse.
Are ounces and fluid ounces the same here?
No. The ounce option means weight ounces. Fluid ounces measure volume and are not an output option in this tool.
Does this use a US cup or a metric cup?
It uses US cups and US spoons. It does not offer a 250 mL metric-cup or Australian-tablespoon setting.
Can I use the converter for an ingredient that is not listed?
Use a listed ingredient only when it matches what you have. The tool does not accept custom densities. For a different ingredient, look for a recipe-specific weight or another suitable reference instead of choosing a rough substitute.
Should I replace the grams already written in my recipe?
No. Recipe-specific gram measurements take priority because they may reflect a particular brand, technique and tested balance. Use this chart to fill a measurement gap, not to override that information.
Recipes to explore
- Pecan Cream Cheese Cookies (Soft Christmas Cookies)
Compare the original cup measures with any recipe-specific gram weights before converting.
- Chocolate Chipless Cookies (Soft & Chewy Boneless Cookies)
Compare the original cup measures with any recipe-specific gram weights before converting.