Granulated Sugar Grams to Cups Converter
Convert granulated sugar from grams to cups using ingredient-specific baking measurements.
100 grams of granulated sugar ≈ 0.51 US cups
About ½ cup
Based on 1 US cup of granulated sugar = 198g
Convert grams to cups
Enter an amount greater than 0.
100 grams of granulated sugar equals
0.51 US cups
½ cup
- Tablespoons 8.08 tbsp
- Teaspoons 24 tsp
- Milliliters 121.2 ml
Based on 1 US cup of granulated sugar = 198g
Customize grams per cup
Enter a number of grams greater than 0.
Conversions are approximate and may vary by ingredient brand, packing, humidity, and measuring method. Spoons: 15 ml tablespoon, 5 ml teaspoon. Kitchen estimates have up to 10% volume rounding error; very small amounts use a threshold. See Methodology for the policy.
How this conversion is calculated
Adopted reference value
1 US cup of Granulated sugar = 198g
Ingredient record reviewed: 2026-08-04
Cup type
US cup / 240 ml
Measuring method
Granulated, uncompacted · spooned level
Granulated sugar grams to cups conversion table
| Grams | Cups | tbspTablespoons | tspTeaspoons | ml |
|---|---|---|---|---|
| 10g | 0.05 cups | 0.81 | 2.4 | 12.1 |
| 15g | 0.08 cups | 1.21 | 3.6 | 18.2 |
| 20g | 0.10 cups | 1.62 | 4.8 | 24.2 |
| 25g | 0.13 cups | 2.02 | 6.1 | 30.3 |
| 30g | 0.15 cups | 2.42 | 7.3 | 36.4 |
| 40g | 0.20 cups | 3.23 | 9.7 | 48.5 |
| 50g | 0.25 cups | 4.04 | 12 | 60.6 |
| 60g | 0.30 cups | 4.85 | 15 | 72.7 |
| 75g | 0.38 cups | 6.06 | 18 | 90.9 |
| 80g | 0.40 cups | 6.46 | 19 | 97 |
| 100g | 0.51 cups | 8.08 | 24 | 121.2 |
| 125g | 0.63 cups | 10.10 | 30 | 151.5 |
| 150g | 0.76 cups | 12.12 | 36 | 181.8 |
| 200g | 1.01 cups | 16.16 | 48 | 242.4 |
| 250g | 1.26 cups | 20.20 | 61 | 303 |
| 300g | 1.52 cups | 24.24 | 73 | 363.6 |
| 500g | 2.53 cups | 40.40 | 121 | 606.1 |
Kitchen fraction approximation
¼ cup
≈ 50g
⅓ cup
≈ 66g
½ cup
≈ 99g
⅔ cup
≈ 132g
¾ cup
≈ 149g
Sources & how they compare
| Source | Reported value | Comparable source-cup value | Type | Method the source states | Adopted here | Checked |
|---|---|---|---|---|---|---|
| King Arthur Baking — Ingredient Weight Chart | 198 g per 1 cup (volume not stated) | 198g | Direct | not stated (the chart lists weights only) | Adopted | 2026-07-18 |
| USDA FoodData Central — Sugars, granulated (FDC 169655) FDC ID: 169655 Backup copy: nutritionvalue.org | 200 g per 1 cup (volume not stated) | 200g | Direct | not specified | 2026-08-04 |
Measuring step this site recommends: spooned level.
When sources disagree, follow your recipe: use its gram weights if it gives them, or measure the way its author did. The adopted value is one stated convention, not a correction of the other sources.
A comparable source-cup value only scales a half-cup or tablespoon serving to one source cup. When a source does not state the cup's exact volume, we do not present it as a fixed-milliliter normalization.
Measurement notes
- Granulated sugar pours and settles fairly consistently, so cup measurements are more reliable than flour.
- Spoon sugar into the measuring cup and level off the top with a knife for consistent results.
- Superfine (caster) sugar weighs slightly less per cup than standard granulated sugar in King Arthur's weight chart, so this value is for granulated sugar only.
- A kitchen scale removes any guesswork when a recipe needs precise sugar amounts.
Common mistakes
- Assuming 1 cup of granulated sugar equals 240g like water — it is actually 198g per US cup.
- Assuming every type of sugar (granulated, brown, powdered) weighs the same per cup.
Convert other ingredients in your recipe
Brown sugar (packed)
1 cup = 220g · 100g ≈ 0.45 cups
View conversion →
Butter
1 cup = 227g · 100g ≈ 0.44 cups
View conversion →
Water
1 cup = 240g · 100g ≈ 0.42 cups
View conversion →
Milk
1 cup = 244g · 100g ≈ 0.41 cups
View conversion →
Each link converts that ingredient with its own cup weight; none of them is a substitute for this one.
Related amount conversions
Frequently asked questions
How many cups is 100 grams of granulated sugar?
100 grams of granulated sugar is about 0.51 cups, based on 1 US cup (240 ml) = 198g.
How many grams are in 1 cup of granulated sugar?
1 US cup of granulated sugar weighs about 198 grams when spooned in without packing and leveled.
Does 1 cup of granulated sugar weigh the same in a metric cup?
No. A metric cup (250 ml) holds slightly more than a US cup (240 ml), so 1 metric cup of granulated sugar is about 206.3g, compared with 198g in a US cup.
What's the best way to measure granulated sugar accurately?
Spoon granulated sugar into the cup without packing it down, then level it off. Use a kitchen scale when your recipe calls for a precise weight.
Can I convert cups of granulated sugar back to grams?
Yes, use the Cups to Grams tool with granulated sugar selected to convert any cup amount back into grams.
Why does granulated sugar convert differently from other ingredients?
Grams measure weight and cups measure volume, so the conversion depends on how dense granulated sugar is. A denser or lighter ingredient weighs a different amount per cup.