Sugar Grams to Cups Converter
100g of granulated white sugar is about 0.51 US cups, using our 198g-per-cup reference.
Enter your sugar weight below to convert another amount.
Sugar grams-to-cups conversion chart
These amounts use 198g of granulated white sugar per US Customary cup. Answers are rounded to two decimal places.
| Sugar weight | Approximate US cups |
|---|---|
| 25g | 0.13 |
| 50g | 0.25 |
| 75g | 0.38 |
| 100g | 0.51 |
| 125g | 0.63 |
| 150g | 0.76 |
| 175g | 0.88 |
| 198g | 1 |
| 200g | 1.01 |
| 225g | 1.14 |
| 250g | 1.26 |
| 300g | 1.52 |
| 350g | 1.77 |
| 400g | 2.02 |
| 500g | 2.53 |
| 750g | 3.79 |
| 1,000g | 5.05 |
The results are decimal cups: 0.25 means ¼ cup, and 0.5 means ½ cup. Rounded results are estimates, so 50g appearing as 0.25 cup does not mean it is exactly one-quarter of 198g.
For a kitchen reference covering more ingredients, see our printable conversion chart.
Is one cup of sugar 198g or 200g?
Both figures appear in baking references. King Arthur lists 198g for a cup of granulated white sugar. For comparison, this Domino Sugar recipe lists 200g for one cup.
That explains why 200g becomes 1.01 cups in our table but 1 cup with a 200g-per-cup reference. The difference between those references is 2g per cup—about 1%.
If your recipe gives both grams and cups, use its own equivalent. If it gives grams and you have a kitchen scale, weigh that amount directly. Our calculator provides an estimate when you need to work with cups.
How to convert sugar grams to cups
For granulated sugar under this page's US reference:
Cups of sugar = grams of sugar ÷ 198
For example:
Keep the full value while calculating and round the final answer.
For the reverse calculation, multiply cups by 198. ½ US cup × 198 = 99g under this reference. Switch the calculator's direction above, or use the cups-to-grams converter with granulated sugar selected.
Does this work for brown or powdered sugar?
Use the matching sugar reference. Equal weights of different sugars can fill different volumes.
| Sugar type and preparation | Reference grams per cup | 100g in cups, approximately |
|---|---|---|
| Granulated white sugar | 198g | 0.51 |
| Brown sugar, packed | 213g | 0.47 |
| Powdered sugar, unsifted | 113g | 0.88 |
The reference weights come from the King Arthur chart linked above and use this site's US cup setting. Follow the brown sugar conversion guide or powdered sugar conversion guide for those ingredients.
This comparison helps you measure the sugar your recipe requests. It is not a substitution chart.
How to measure granulated sugar in cups
- Use a dry measuring cup in the size your recipe assumes.
- Spoon in the sugar until it sits slightly above the rim.
- Sweep a straight edge across the top to remove the excess.
Betty Crocker's measuring guidance describes this method for granulated sugar and distinguishes it from firmly packing brown sugar. Do not apply brown sugar's packing instructions to the granulated sugar measurement here.
Questions about converting sugar
Does a metric cup change the result?
Yes. The converter's metric setting uses 250mL, compared with about 236.6mL for US Customary. Under our volume-scaling method, 100g of granulated sugar fills about 0.48 metric cups, versus 0.51 US cups. These are calculated estimates using the same sugar reference, not separate kitchen measurements. The table above stays in US cups even if you change the calculator setting. See our cup-size guide for help choosing a setting.
Can I use this for caster sugar or other sweeteners?
This page's default is granulated white sugar. For caster sugar, coarse sugars or a sugar substitute, use a reference for that exact product or follow the recipe's stated weight. Our ingredient weight table explains the references available on this site.
More baking conversions
Measuring other ingredients for the same recipe? Use the flour converter or butter converter, or return to the grams-to-cups converter to choose another ingredient.