1 cup of brown sugar (packed) in grams

One level US cup (240 ml) of brown sugar (packed) weighs about 220 grams. That makes ½ cup ≈ 110 g, ⅓ cup ≈ 73 g and ¼ cup ≈ 55 g. These are scoop-and-level averages — packing the cup can add up to 20%, which is why bakers swear by a scale. More ingredients in the full cups-to-grams converter.