| US cup amount | Weight |
|---|---|
| 1/8 cup | 25 g |
| 1/4 cup | 50 g |
| 1/3 cup | 66 g |
| 1/2 cup | 99 g |
| 3/4 cup | 148 g |
| 1 cup | 198 g |
| 1 1/2 cups | 297 g |
| 2 cups | 396 g |
Sugar Grams to Cups
1 US cup of sugar weighs 198 grams. One US cup of white granulated sugar weighs 198 grams using the King Arthur Baking reference. Granulated, brown and powdered sugar are not interchangeable by volume because their cup weights differ.
Use the converter and charts below for white granulated sugar, leveled.
Grams to Cups Converter
Choose the ingredient before converting because every ingredient has a different weight per cup.
Grams to Cups Converter
Results use the documented ingredient state and one US customary cup.
Divide the gram amount by 198 to calculate US cups. The practical fraction is a measuring aid, not a replacement for the exact gram weight.
| Grams | US cups | Practical reference |
|---|---|---|
| 25 g | 0.13 cups | about 1/8 cup |
| 30 g | 0.15 cups | about 1/8 cup |
| 40 g | 0.2 cups | about 1/4 cup |
| 50 g | 0.25 cups | about 1/4 cup |
| 60 g | 0.3 cups | about 1/3 cup |
| 75 g | 0.38 cups | about 3/8 cup |
| 80 g | 0.4 cups | about 3/8 cup |
| 100 g | 0.51 cups | about 1/2 cup |
| 120 g | 0.61 cups | about 5/8 cup |
| 125 g | 0.63 cups | about 5/8 cup |
| 150 g | 0.76 cups | about 3/4 cup |
| 200 g | 1.01 cups | 1 cup |
| 250 g | 1.26 cups | about 1 1/4 cup |
| 300 g | 1.52 cups | about 1 1/2 cup |
| 400 g | 2.02 cups | 2 cups |
| 500 g | 2.53 cups | about 2 1/2 cup |
Pour or spoon granulated sugar into a dry cup and level the top without pressing it down. If the recipe says packed brown sugar or sifted powdered sugar, use the guide for that specific sugar instead.
Grams = cups × 198
One cup is 198 grams, one-half cup is about 99 grams and one-quarter cup is about 50 grams.
Common uses
- Cakes and cookies
- Syrups and custards
- Meringue and preserves
Granulated sugar settles more tightly than flour, so the same weight occupies less space. Crystal size can cause small brand-to-brand differences, but 198 grams per cup is the consistent working standard used across this site.
The converter does not assume that every cup weighs 237 or 250 grams. It uses the documented value for the exact ingredient and state selected.
If a product label or recipe publisher supplies a different gram weight for one cup, follow that recipe-specific value for the closest match to the original testing.
Method and source
How this conversion was checked
This page uses 198 grams per US cup for white granulated sugar, leveled. Measure level without packing.
Primary reference: King Arthur Baking Ingredient Weight Chart
Cup standard: NIST US customary cup reference
How many grams are in one cup of sugar?
One US cup of white granulated sugar, leveled uses a working reference of 198 grams on GramstoCup.co.
How many cups is 100 grams of sugar?
100 grams of white granulated sugar, leveled is 0.51 US cups.
How many grams is half a cup of sugar?
Half a US cup is approximately 99 grams using the 198 gram full-cup reference.
Can the result vary by brand or method?
Yes. Measure level without packing. Use the original recipe weight when precision is important.
Are these US cups or metric cups?
The results use a US customary cup. A metric cup is 250 milliliters and can produce a different answer.
Other Ingredient Guides
Each guide uses its own grams-per-cup standard.
Editorial review
Reviewed for clarity and consistency
Written and reviewed by William Leo. Ingredient values are checked against the methodology and sources listed on this page.
Last reviewed
August 23, 2026