A packed tablespoon of brown sugar weighs about 13.3 grams. King Arthur Baking lists packed brown sugar, light or dark, at 213 g per cup, and that's where this figure for the grams in a tablespoon of brown sugar comes from.
| Amount | Brown sugar, packed |
|---|---|
| 1/4 tsp | 1.1 g |
| 1/2 tsp | 2.2 g |
| 1 tsp | 4.4 g |
| 1 tbsp | 13.3 g |
| 1/4 cup | 53.3 g |
| 1/2 cup | 106.5 g |
| 1 cup | 213 g |
Packed vs loose: the big variable
Brown sugar is white sugar coated with molasses, which makes it moist and soft. Unlike granulated sugar, it squishes. A loosely filled spoon holds a lot of air, while a firmly packed spoon holds much more sugar.
That's why almost every recipe says "packed" brown sugar. The 213 g per cup figure assumes you've pressed it in. A loose spoonful will weigh noticeably less than 13.3 g, so if you skip the packing, your cookies get less sugar than the recipe intended.
Weighing sidesteps the whole packed or loose debate. Thirteen grams is thirteen grams no matter how firmly you press, which is why many bakers switch to grams for brown sugar first. It's also less messy than scraping sticky sugar out of a tablespoon.
You may also see a 4 g teaspoon on brown sugar nutrition labels, such as Domino's. Labels round to whole grams, so that lines up reasonably well with King Arthur's 4.4 g.
Why grams in a tablespoon of brown sugar can still vary
- How hard you press. Firm, even pressure gives repeatable results. Mashing with all your strength adds more.
- Moisture. Fresh brown sugar is soft and packs easily. Dried out sugar forms hard lumps that leave gaps.
- Light or dark. King Arthur Baking uses the same weight for both, so you can treat them alike for measuring.
How to pack brown sugar the right way
- Break up any lumps with your fingers or a fork.
- Spoon the sugar into your measuring spoon.
- Press it down firmly with the back of another spoon.
- Add more and press again until it's level with the rim.
- Tip it out. It should hold the shape of the spoon for a moment.
If your brown sugar has gone rock hard, soften it before measuring. Sealing it in a container with a slice of bread or a damp paper towel overnight usually brings it back. Keep it in an airtight container to stop it drying out again.
Where brown sugar by the spoon makes a difference
- Glazes and rubs. A tablespoon or two in a ham glaze or barbecue rub.
- Oatmeal and yogurt toppings. Weighing once shows you what your usual spoonful really is.
- Small batch cookies. When a recipe is scaled down, spoon amounts need to be right.
- Sauces. Teriyaki and stir fry sauces often use a few tablespoons.
When scaling a recipe down, remember that 1 tablespoon equals 3 teaspoons. A packed teaspoon of brown sugar is about 4.4 g.
A practical tip: packing spoons gets messy, and brown sugar sticks to everything. A MeasureMate digital measuring spoon scoops and weighs in one step, so you can stop at 13.3 g without packing at all. Use the tare button to zero it, watch the display in 0.1 g steps, and pop off the removable spoon head to rinse away the sticky bits.
Quick questions
Is a tablespoon of brown sugar heavier than white sugar?
When packed, yes. Packed brown sugar is about 13.3 g per tablespoon, while granulated sugar is about 12.4 g by King Arthur Baking's chart.
How many grams is 1/4 cup of packed brown sugar?
About 53.3 g, based on 213 g per cup.
Do light and dark brown sugar weigh the same?
King Arthur Baking lists them at the same 213 g per packed cup, so you can measure them the same way.
Weights based on the King Arthur Baking ingredient weight chart and the Domino light brown sugar label.