100 grams of grated parmesan is 3.53 oz (100 g). It is about the size of a coffee mug and fills a volume of 1.01 cups (238 mL).

In kitchen measures
1.01 cups
48.3 tsp · 16.1 tbsp · 1.01 cups
about the size of a coffee mug
Density estimated by AI from typical values. Grated parmesan typically ranges 0.35–0.5 g/mL depending on how it's packed. A firmly packed scoop weighs more.