A pinch of red pepper flakes is a small amount of spice that measures 0.021 tbsp (0.308 mL). It is about half the size of a green pea and forms a loose pile 0.569 in (1.44 cm) wide and 0.222 in (5.64 mm) tall.

In kitchen measures
0.062 teaspoons
0.062 tsp · 0.021 tbsp · 0.0013 cups
about half the size of a green pea
Density estimated by AI from typical values. Red pepper flakes typically ranges 0.25–0.45 g/mL depending on how it's packed. A firmly packed scoop weighs more.