Ingredient Weight Converter · sweetener
Dark Brown Sugar: cups to grams
1 cup of dark brown sugar weighs 230 grams. Use the converter below for any other amount, or check the quick-reference table.
By Andrew Flores, Editor and publisher, Nathan Management. Last reviewed .
Density source: USDA FoodData Central, cross-checked against the King Arthur Baking weight chart. How these figures are derived and corrected is documented in our editorial standards.
Dark Brown Sugar baseline: 1 cup = 230 g.
Common amounts
| Cups | Tablespoons | Grams | Ounces (weight) | Milliliters |
|---|---|---|---|---|
| 1/4 cup | 4.0 | 58 g | 2.03 oz | 59 mL |
| 1/3 cup | 5.3 | 77 g | 2.70 oz | 79 mL |
| 1/2 cup | 8.0 | 115 g | 4.06 oz | 118 mL |
| 2/3 cup | 10.7 | 153 g | 5.41 oz | 158 mL |
| 3/4 cup | 12.0 | 173 g | 6.08 oz | 177 mL |
| 1 cup | 16.0 | 230 g | 8.11 oz | 237 mL |
| 1.5 cups | 24.0 | 345 g | 12.17 oz | 355 mL |
| 2 cups | 32.0 | 460 g | 16.23 oz | 473 mL |
| 3 cups | 48.0 | 690 g | 24.34 oz | 710 mL |
| 4 cups | 64.0 | 920 g | 32.45 oz | 946 mL |
Spoon weights
Derived from the same 230 g per cup — a US tablespoon is 1/16 of a cup and a teaspoon is 1/48.
| Amount | Grams |
|---|---|
| 1 tablespoon | 14 g |
| 1 teaspoon | 4.8 g |
| 1/2 teaspoon | 2.4 g |
| 1/4 teaspoon | 1.2 g |
Dark Brown Sugar at a glance
- Molasses content
- roughly 6.5%, about double light brown sugar
- 1 lb bag yields
- just under 2 cups packed (454 g ÷ 230 g)
- Not the same as
- Muscovado, which is unrefined, wetter, and stronger — swap it 1:1 only when you want that flavor
What a cup of dark brown sugar actually weighs
The published 230 g assumes one specific way of filling the cup. Here is what the same cup weighs under the other common handling methods and product forms, and how far off the recipe you end up.
| How it was measured | Grams per cup | vs. published | Why |
|---|---|---|---|
| Firmly packed | 230 g | published figure | The figure every recipe that says 'packed' assumes. |
| Scooped loose | ~180 g | -22% | The heavier molasses coating makes dark brown clump even harder than light brown, so an unpacked cup is badly short. |
A tilde (~) marks a working estimate rather than a published figure — it varies with brand, grind, or how hard the cup was packed.
Why measuring dark brown sugar by cup goes wrong
Dark brown sugar has more molasses than light brown — usually about double — which makes it heavier (230 g/cup packed), darker, and more caramel-forward in flavor. The extra molasses also means more moisture, which translates to chewier cookies and moister cakes than the same recipe made with light brown.
Practical tips for working with dark brown sugar
Dark brown sugar substitutes 1:1 for light brown in any recipe, and the swap is worth experimenting with in chocolate-chip cookies and gingerbread — the deeper flavor reads as 'home-baked' to most palates. The reverse swap (light for dark) is also fine but produces a lighter, less complex result.
Note from this ingredient's record: Carries more molasses than light brown — slightly heavier, noticeably moister. Swappable 1:1 with light brown but the cookie will be chewier and more caramel-forward.
Substitutions that work — and what they cost you
Make it from white sugar
Ratio: 1 cup granulated sugar plus 2 tablespoons molasses
Trade-off: Use unsulphured molasses. Blackstrap will make it bitter.
Light brown sugar
Ratio: 1:1 packed
Trade-off: Lighter color, less caramel depth, and marginally drier — noticeable in gingerbread, invisible in most cakes.
When dark brown sugar ruins the recipe
| What you see | What went wrong | What to do |
|---|---|---|
| Gingerbread or spice cookies taste harsh and bitter | Blackstrap molasses used where unsulphured was meant, or too much dark brown stacked on top of the molasses already in the recipe. | Use unsulphured molasses and dark brown sugar as written; blackstrap is a strong, mineral-heavy third product. |
Storing dark brown sugar
Airtight. Higher molasses means it holds moisture longer than light brown, but it also clumps harder once it does dry — the damp-paper-towel microwave trick works the same way.
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