To convert 5 grams to teaspoons, we need to know the density of the substance. This is because grams are a unit of mass and teaspoons are a unit of volume, which are different physical quantities. For example, 5 grams of sugar is equal to 1.195 teaspoons, while 5 grams of salt is equal to 0.84 teaspoons.

However, if we assume that we are dealing with water, which has a density of 1 gram per milliliter, then 5 grams of water is equal to 1.01 US teaspoons.

Therefore, the answer to "what is 5 grams in teaspoons" depends on the density of the substance being measured.