Sorry. Grams are a unit of weight, teaspoons a measure of volume, so there is no equivalency. A tsp of mercury weighs a lot more grams than a tsp of olive oil.
Perhaps the most commonly measured liquid is water, and it so happens that 1 milliliter of water weighs 1 gram (or very close). 1 tsp = 4.928 ml, so one tsp of water weighs almost 5 grams. Any substance other than water will have a different metric weight equivalency.
Perhaps the most commonly measured liquid is water, and it so happens that 1 milliliter of water weighs 1 gram (or very close). 1 tsp = 4.928 ml, so one tsp of water weighs almost 5 grams. Any substance other than water will have a different metric weight equivalency.