Brown Sugar:
Grams to Cups
By Stefan Ulrich · Last updated
Brown sugar is almost always measured packed: 1 cup packed = 220 grams. Loosely spooned, that same cup holds only 170–180 grams. This is why recipes specify 'firmly packed brown sugar' — it's a necessary instruction that standardizes the measurement.
How much Brown Sugar weighs at each cup measure.
Convert Brown Sugar
1 cup = 220 grams
= — grams
= — cups
Quick reference
Measurement Table
| Cups | Grams | Ounces |
|---|---|---|
| 1 tsp | 5 g | 0.18 oz |
| 1 tbsp | 14 g | 0.49 oz |
| ⅛ cup | 28 g | 0.99 oz |
| ¼ cup | 55 g | 1.94 oz |
| ⅓ cup | 73 g | 2.57 oz |
| ½ cup | 110 g | 3.88 oz |
| ⅔ cup | 147 g | 5.19 oz |
| ¾ cup | 165 g | 5.82 oz |
| 1 cup | 220 g | 7.76 oz |
| 1¼ cups | 275 g | 9.70 oz |
| 1½ cups | 330 g | 11.64 oz |
| 2 cups | 440 g | 15.52 oz |
| 3 cups | 660 g | 23.28 oz |
About Brown Sugar
Brown sugar's molasses content makes it sticky and prone to clumping, which is why it needs to be packed into the measuring cup. The standard packing means pressing the sugar down firmly until it holds the shape of the cup when inverted — like a sandcastle.
Light brown sugar (3.5% molasses) and dark brown sugar (6.5% molasses) weigh essentially the same per packed cup. The difference is flavor: light brown sugar is subtler and works in most recipes, while dark brown sugar brings a more intense toffee character to ginger cookies, BBQ sauce, and sticky toffee pudding.
Brown sugar stored without moisture control hardens into a rock-solid brick. A brown sugar saver (a terracotta disc soaked in water) or a slice of bread placed in the container will keep it soft. If your sugar has already hardened, place it in a sealed container with a piece of apple for 24 hours — the moisture rehydrates the molasses.
For baking conversions: 1 lb brown sugar ≈ 2 cups packed (454 g ÷ 220 g = 2.06 cups).
Tips for measuring Brown Sugar
- Always pack firmly — loose brown sugar is ~170 g/cup, packed is 220 g.
- Light and dark brown sugar are the same weight; substitute 1:1.
- To make 1 cup brown sugar: 200 g granulated sugar + 1 tbsp molasses.
- Hardened brown sugar: seal with an apple slice overnight to restore moisture.
- Brown sugar keeps best in a sealed container with a small piece of bread or a brown sugar saver.
- For cookies, pack and then break up clumps before mixing; humid kitchens make clumps very common.
Common mistakes
- Not packing tightly enough — the single biggest measurement variable for brown sugar
- Using dark brown when light is called for — noticeably changes flavor profile
- Using loose spooned brown sugar in recipes that expect packed cups.
Frequently Asked Questions
- How many grams in a cup of Brown Sugar?
- 1 cup of Brown Sugar weighs 220 grams — the standard used in most American recipes. Use the converter above for any other amount.
- How many grams is 1 tablespoon of Brown Sugar?
- 1 tablespoon of Brown Sugar weighs about 14 grams. The full table above lists every common cup fraction.
- What's the most common mistake when measuring Brown Sugar?
- Not packing tightly enough — the single biggest measurement variable for brown sugar. Weighing on a kitchen scale avoids it entirely.
- Do I pack Brown Sugar into the cup?
- Only pack brown sugars; granulated and powdered brown Sugar are spooned in loosely and levelled. Packing the wrong type adds significant weight.