A single teaspoon of ground cumin is a small amount of spice that weighs 0.078 oz (2.22 g). When poured into a loose pile, it is about half the size of a cherry.

In kitchen measures
1 teaspoons
1 tsp · 0.333 tbsp · 0.021 cups
about half the size of a cherry
Ground cumin typically ranges 0.4–0.5 g/mL depending on how it's packed. A firmly packed scoop weighs more.