1 teaspoon of granulated sugar is a small amount that weighs 0.148 oz (4.19 g). When poured into a loose pile, it is 1.49 in (3.77 cm) wide and 0.52 in (1.32 cm) tall, which 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
Granulated sugar typically ranges 0.8–0.94 g/mL depending on how it's packed. A firmly packed scoop weighs more.