10 grams of matcha powder is a fine, vibrant green dust that occupies a volume of 1.93 tbsp (28.6 mL). When poured into a loose pile, it measures 2.45 in (6.24 cm) wide and 1.11 in (2.81 cm) tall, which is about the size of a ping-pong ball.

In kitchen measures
1.93 tablespoons
5.8 tsp · 1.93 tbsp · 0.121 cups
about the size of a ping-pong ball
Matcha powder typically ranges 0.3–0.42 g/mL depending on how it's packed. A firmly packed scoop weighs more.