A teaspoon is the same size as 1/6 fluid ounces. A teaspoon is also equivalent to 4.92892 millimeters or 0.4929 centiliters.
One cup holds 48 teaspoons or 16 tablespoons as there are three teaspoons in one tablespoon. A teaspoon is a common measurement used during cooking and dispensing medicine, though often times, medicine is measured in milliliters.
The terms dash and pinch generally refer to around 1/8 of a teaspoon, though this can vary slightly depending on the user's preference. A teaspoon is often part of a measuring spoon set, but a regular teaspoon that is found is most kitchens also works for measuring ingredients.