is tsp and milliliters the same?
Teaspoons. The teaspoon is a unit of volume equal to one-third of a tablespoon. One teaspoon is equal to around 4.9 milliliters, but in nutrition labelling, one teaspoon is equal to exactly 5 milliliters. ... For example, 1 teaspoon can be written as 1 tsp, 1 t, 1 ts, or 1 tspn.