Cups of granulated sugar to grams
1 US cup of granulated sugar = 200 g (7.1 oz). A 250 ml metric cup = 211 g.
Type 1/2, 1 1/2 or 0.75. The cup size changes the volume; the weight scales by volume, so it assumes the same filling method in every cup.
What the sources say about a cup of granulated sugar
Two published sources, side by side. Where a source lists several forms or ways of measuring, each is a row.
| Source | What was measured | Grams per US cup | Ounces |
|---|---|---|---|
| Our default | See “why this number” below | 200 g | 7.05 oz |
| USDA FoodData Central | Granulated, 1 cup | 200 g | 7.05 oz |
| King Arthur Baking | Sugar (granulated white) | 198 g | 6.98 oz |
| King Arthur Baking | Baker's Special Sugar (superfine sugar, castor sugar) | 190 g | 6.7 oz |
Spread across sources: 1% between USDA and King Arthur for the main entry. Ingredient weights vary by brand, packing and humidity; the table is a reference, not a guarantee.
Why this number: 200 g per US cup
We use the USDA measured weight, because for liquids, fats, syrups and free-flowing grains a measured weight is more reliable than a rounded ounce value. Where the two sources disagree, both figures are in the table above and in the calculator, so you can switch to the one your recipe was written with.
Granulated sugar is the best-behaved ingredient on this site. It flows, does not compact, and the two sources agree to within 1%: USDA 200 g, King Arthur 198 g (that is 7 oz rounded). We use USDA's 200 g.
Caster (superfine) sugar is not the same by volume: King Arthur lists 190 g per cup for superfine, because the smaller crystals nest together differently. Swapping caster for granulated by cup therefore changes the sugar weight by about 4%; swapping by gram does not.
A metric cup (250 ml) of granulated sugar is about 211 g. If an Australian recipe lists 1 cup sugar, it means this larger cup.
Cups of granulated sugar to grams chart
| US cups | Grams (US cup) | Ounces | Grams (metric 250 ml cup) |
|---|---|---|---|
| 1/8 cup | 25 g | 0.88 oz | 26.4 g |
| 1/4 cup | 50 g | 1.76 oz | 52.8 g |
| 1/3 cup | 66.7 g | 2.35 oz | 70.4 g |
| 1/2 cup | 100 g | 3.53 oz | 105.7 g |
| 2/3 cup | 133.3 g | 4.7 oz | 140.9 g |
| 3/4 cup | 150 g | 5.29 oz | 158.5 g |
| 1 cup | 200 g | 7.05 oz | 211.3 g |
| 1 1/2 cups | 300 g | 10.58 oz | 317 g |
| 2 cups | 400 g | 14.11 oz | 422.7 g |
| 3 cups | 600 g | 21.16 oz | 634 g |
| 4 cups | 800 g | 28.22 oz | 845.4 g |
Grams of granulated sugar to cups
| Grams | US cups (decimal) | US cups (nearest 1/8) | Metric cups (250 ml) |
|---|---|---|---|
| 25 g | 0.12 | 1/8 | 0.12 |
| 50 g | 0.25 | 1/4 | 0.24 |
| 100 g | 0.5 | 1/2 | 0.47 |
| 125 g | 0.62 | 5/8 | 0.59 |
| 150 g | 0.75 | 3/4 | 0.71 |
| 200 g | 1 | 1 | 0.95 |
| 250 g | 1.25 | 1 1/4 | 1.18 |
| 300 g | 1.5 | 1 1/2 | 1.42 |
| 400 g | 2 | 2 | 1.89 |
| 500 g | 2.5 | 2 1/2 | 2.37 |
| 1,000 g | 5 | 5 | 4.73 |
US cup, metric cup and spoons
One US cup of granulated sugar at our default weight is 200 g. A 250 ml metric cup, used in Australia, New Zealand, Canada and many metric recipes, holds the same volume plus 5.7%, which is 211 g. A US legal (nutrition label) cup of 240 ml is 203 g. These all assume the same packing as the US cup; read about it on US cup vs metric cup.
| Spoon | Grams |
|---|---|
| 1 tablespoon (15 ml) | 12.5 g |
| 1 teaspoon (5 ml) | 4.2 g |
| 1 Australian tablespoon (20 ml) | 16.9 g |
Sources and when they were checked
- USDA FoodData Central, SR Legacy (April 2018 release), food Sugars, granulated (FDC ID 169655). Gram weights per household measure as published; per-cup figures where USDA lists a different amount (such as 2 tablespoons) are scaled.
- King Arthur Baking, Ingredient Weight Chart, row(s): Sugar (granulated white), Baker's Special Sugar (superfine sugar, castor sugar). Chart rows that list a quarter cup, half cup or tablespoon are scaled to a full cup on this page; the original listing is shown in the table above.
- Cup volumes: the US customary cup is exactly 236.5882365 ml; the US nutrition-label cup is defined in US law as 240 ml (21 CFR 101.9); the metric cup is 250 ml (see US cup vs metric cup).
Last checked 27 October 2026. Weights are for reference: ingredients vary by brand, humidity and how they are packed. If your recipe gives gram weights, use those.
Frequently asked questions
How many grams is 1 cup of granulated sugar?
1 US cup of granulated sugar is 200 g by our default (USDA). USDA lists 200 g and King Arthur lists 198 g. A 250 ml metric cup holds about 211 g.
How many grams is 1/2 cup of granulated sugar?
1/2 US cup of granulated sugar is 100 g (3.53 oz). In a metric cup it is 105.7 g.
How many grams is 1/4 cup of granulated sugar?
1/4 US cup of granulated sugar is 50 g (1.76 oz).
How many cups is 100 g of granulated sugar?
100 g of granulated sugar is 0.5 US cups (about 1/2 cups), or 0.47 metric cups.
How many cups is 500 g of granulated sugar?
500 g of granulated sugar is 2.5 US cups, or 2.37 metric cups.
How many grams is a cup of caster sugar?
King Arthur lists 190 g for a US cup of superfine (caster) sugar, against 198 g for granulated. Scaled to a 250 ml metric cup, that is about 201 g.