1 cup of oat flour is a standard kitchen measurement that weighs 3.59 oz (102 g). When poured into a loose pile, it is about the size of a coffee mug.

In kitchen measures
16 tablespoons
48 tsp · 16 tbsp · 1 cups
about the size of a coffee mug
Density estimated by AI from typical values. Oat flour typically ranges 0.38–0.5 g/mL depending on how it's packed. A firmly packed scoop weighs more.