One cup of granulated sugar weighs about 200 grams, while one cup of powdered sugar usually weighs about 120 grams. The difference happens because powdered sugar is much finer, lighter, and more airy than granulated sugar, so a cup holds less actual sugar by weight.
Sugar measurements can be confusing, especially when a recipe asks for cups but you want to use grams. Powdered sugar and granulated sugar may look similar in a recipe, but they are not the same when measured by volume. Understanding the difference helps you bake more accurately and get better results every time.
- 1 cup granulated sugar = about 200 grams
- 1 cup powdered sugar = about 120 grams
These numbers are the most practical kitchen averages, but the exact weight can vary slightly depending on how the sugar is measured and how fine it is.
Conversion Table
| Sugar Type | 1 Cup in Grams | Notes |
|---|---|---|
| Granulated sugar | 200 g | Standard white sugar used in most baking recipes |
| Powdered sugar | 120 g | Also called confectioners’ sugar, lighter and finer in texture |
Why the Weight Is Different
The reason powdered sugar weighs less than granulated sugar is simple: it is much finer and airier. Granulated sugar crystals are larger and pack more tightly into a cup, so more weight fits into the same space.
Powdered sugar is ground into a soft powder, which makes it fluffy and less dense. That means one cup of powdered sugar contains fewer grams than one cup of granulated sugar. This difference matters a lot in baking because even a small change in sugar weight can affect sweetness, texture, and structure.
When to Use Each Sugar
Granulated sugar is best for everyday baking, cooking, and sweetening drinks. It works well in cookies, cakes, muffins, and sauces because it dissolves gradually and helps create structure.
Powdered sugar is usually used in frostings, glazes, whipped toppings, and dusting desserts. Its fine texture makes it ideal when a smooth finish is needed. It also blends easily without leaving grainy bits behind.
Why Grams Are Better Than Cups
Using grams is more accurate than using cups because cup measurements can vary depending on how you scoop, level, or pack the sugar. Two people can use the same cup and still get different results.
If a recipe is important or delicate, weighing ingredients gives you more consistent results. This is especially helpful in baking, where small measurement differences can change the final texture and taste.
Can You Substitute One for the Other?
You should not treat powdered sugar and granulated sugar as equal cup-for-cup substitutes. Since powdered sugar is much lighter, one cup of powdered sugar does not equal one cup of granulated sugar in weight.
If a recipe specifically calls for one type, it is best to use that type. Substituting may change the sweetness, moisture, and structure of the finished recipe. For example, using powdered sugar instead of granulated sugar in cookies can lead to a softer texture than expected.
Measuring Tips for Best Results
- Use a digital kitchen scale when possible.
- Level the sugar in the measuring cup if you are using cups.
- Do not pack powdered sugar unless the recipe says to.
- Check whether a recipe expects sifted or unsifted powdered sugar.
- Stick to the sugar type listed in the recipe for the best outcome.
These small habits can make a big difference in baking success.
Common Mistakes
A common mistake is assuming all sugar weighs the same in one cup. Another is replacing powdered sugar with granulated sugar without adjusting the recipe, which can change sweetness, texture, and moisture.
It is also easy to forget that powdered sugar is not just finely ground sugar. Its powdery texture and possible cornstarch content make it behave differently in recipes.
Common Questions People Ask
How many grams are in 1 cup of granulated sugar?
One cup of granulated sugar is usually about 200 grams.
How many grams are in 1 cup of powdered sugar?
One cup of powdered sugar is usually about 120 grams.
Why does powdered sugar weigh less?
Because it is finer, lighter, and more airy than granulated sugar.
Can I replace granulated sugar with powdered sugar?
Sometimes, but not directly in the same amount. The texture and result may change.
Is powdered sugar the same as icing sugar?
Yes. In many places, powdered sugar is also called icing sugar or confectioners’ sugar.
Conclusion
The simple answer is that one cup of granulated sugar is about 200 grams, while one cup of powdered sugar is about 120 grams. Knowing this difference helps you measure more accurately and bake with better results. If you want reliable cooking and baking, using grams is the safest choice.