1 ounce of chia seeds is 1 oz (28.3 g), which has a volume of 3.09 tbsp (45.7 mL). Poured into a loose pile, it measures 3.01 in (7.65 cm) wide and 1.18 in (2.99 cm) tall, making it about the size of a golf ball.
Nobody has photographed 1 ounce of chia seeds yet.
Volume
Weighs 1 oz (28.3 g)
about the size of a golf ball
Chia seeds typically ranges 0.55–0.68 g/mL depending on how it's packed. A firmly packed scoop weighs more.