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