0.25 cups of brown sugar (packed) is a compact amount that is about the size of a large egg. When poured into a loose pile, it measures 3.2 in (8.14 cm) wide and 1.34 in (3.41 cm) tall.

In kitchen measures
4 tablespoons
12 tsp · 4 tbsp · 0.25 cups
about the size of a large egg
Brown sugar (packed) typically ranges 0.85–1 g/mL depending on how it's packed. A firmly packed scoop weighs more.