100 Grams to Cups
100g is about 0.83 US cups of all-purpose flour, 0.51 cups of granulated sugar or 0.44 cups of butter.
The answer depends on the ingredient. Find yours in the chart below before choosing a cup measurement.
100 grams to cups by ingredient
These estimates use this site's US Customary cup setting, 236.588mL. Cup answers are rounded to a maximum of two decimal places. The ingredient and preparation listed are part of each conversion.
| Ingredient | 100g in US cups, approximately | Preparation or type |
|---|---|---|
| All-purpose flour | 0.83 | Fluffed, spooned and leveled |
| Granulated white sugar | 0.51 | Dry granulated sugar |
| Butter | 0.44 | Standard butter, not whipped |
| Brown sugar | 0.47 | Packed, light or dark |
| Powdered sugar | 0.88 | Unsifted |
| Rolled oats | 1.12 | Dry old-fashioned oats |
| White rice | 0.54 | Raw, regular long-grain white rice |
| Honey | 0.29 | Strained or extracted honey |
| Olive oil | 0.46 | Olive oil, not every cooking oil |
| Whole milk | 0.41 | Fluid whole milk; reference entry is 3.3% fat |
For another weight or a practical cup-and-spoon suggestion, use the grams-to-cups calculator. Select the same ingredient and cup size as your recipe.
Why doesn't 100g always equal the same number of cups?
Grams measure weight, while cups measure volume. Different ingredients have different weights in the same cup, so the same 100g can occupy more or less space.
The calculation is:
Cups = 100 ÷ the ingredient's grams per cup
For example, our flour reference is 120g per cup: 100 ÷ 120 = about 0.83 cups. Our honey reference is 339g per cup, giving 100 ÷ 339 = about 0.29 cups. These examples explain the table; they are not a reason to substitute one ingredient for another.
How do I measure a decimal cup amount?
Decimal cups do not always match a marked measuring cup. For example, 0.51 cup is close to half a cup, but it is not exactly half.
If you have a scale and the recipe asks for 100g, weigh 100g directly. Without one, the calculator can suggest an approximate combination of cups and spoons. For 100g of all-purpose flour, our US Customary reference gives ¾ cup + 1 tablespoon + 1 teaspoon.
That example uses US customary spoons. Keep the same cup and spoon standard throughout; a tablespoon is not the same volume in every measuring system. Our cup-size guide explains the differences.
Check how the ingredient is measured
The brown-sugar row is for packed sugar, while the powdered-sugar row is for unsifted sugar. Filling either cup differently changes how well the reference fits your measurement.
The rice amount is for uncooked rice, and the oat amount is for dry oats. Do not use those rows for cooked portions. For flour, follow the spoon-and-level measuring guide.
If your recipe provides its own gram equivalent, follow that reference. The table is a practical estimate, not a guarantee that every brand or cup you fill will weigh the same.
Does this chart work with a 250mL metric cup?
The chart above stays on the US Customary setting. A 250mL cup is larger, so the same weight takes fewer cups under our proportional conversion method. For example, 100g of all-purpose flour is about 0.79 metric cups, compared with 0.83 US Customary cups.
Select Metric in the main calculator for that standard. See our methodology for how the site adjusts cup weights and rounds results.
References and related charts
The adopted ingredient weights come from King Arthur Baking, Land O'Lakes and the USDA's Nutritive Value of Foods, revised in 2002. Our grams-per-cup chart identifies each reference and its ingredient scope.
Need a different lookup? Use the 50 grams to cups chart or the printable conversion chart for more amounts.