Liters to teaspoons (metric) conversion calculator above calculates how many teaspoons (metric) are in 'X' liters (where 'X' is the number of liters to convert to teaspoons (metric)). In order to convert a value from liters to teaspoons (metric) (from L to tsp) simply type the number of L to be converted to tsp and then click on the 'convert' button.