100 grams of ground coffee is about the size of a coffee mug. When poured into a loose pile, it measures 5.06 in (12.8 cm) wide and 2.28 in (5.78 cm) tall.

In kitchen measures
1.06 cups
50.7 tsp · 16.9 tbsp · 1.06 cups
about the size of a coffee mug
Ground coffee typically ranges 0.35–0.48 g/mL depending on how it's packed. A firmly packed scoop weighs more.