10 grams of butter is a small portion that weighs 0.353 oz (10 g). It is about the size of a grape and occupies 0.743 tbsp (11 mL) of volume.

In kitchen measures
2.23 teaspoons
2.23 tsp · 0.743 tbsp · 0.046 cups
about the size of a grape
Butter typically ranges 0.9–0.92 g/mL depending on how it's packed. A firmly packed scoop weighs more.