how much does a tsp of cinnamon weigh
14,767 Contributions. CinnamonA teaspoon of ground cinnamon weighs about 2.8 grams. But your question asks how many teaspoons are in one gram. Obviously, a gram of cinnamon will BE LESS than one teâ¦aspoon, since it takes 2.8 grams of the spice to fill one teaspoon.