A 1 tablespoon of chia seeds looks like a small, loose pile about the size of a grape. When poured out, this amount measures 2.07 in (5.25 cm) wide and 0.807 in (2.05 cm) tall.

In kitchen measures
3 teaspoons
3 tsp · 1 tbsp · 0.063 cups
about the size of a grape
Chia seeds typically ranges 0.55–0.68 g/mL depending on how it's packed. A firmly packed scoop weighs more.