Tablespoons (FDA) to teaspoons (metric) conversion calculator shown above calculates how many teaspoons (metric) are in 'X' tablespoons (FDA) (where 'X' is the number of tablespoons (FDA) to convert to teaspoons (metric)). In order to convert a value from tablespoons (FDA) to teaspoons (metric) (from tbsp to tsp) just type the number of tbsp to be converted to tsp and then click on the 'convert' button.