how many ml are in tsp'
Teaspoons to milliliters (tsp to ml) conversion factors are listed below. To find out how many milliliters in teaspoons, multiply by the right factor or use the converter below if converting from US tsp. 1 Teaspoon [US] = 4.92892159 Milliliters. 1 Teaspoon [Metric, Australia] = 5 Milliliters.