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Now that we know how many fluid ounces and milliliters there are in a teaspoon and a tablespoon, we can count easily how many teaspoons in a tablespoon: 1  1 US tablespoon has 3 teaspoons. 2  1 Australian tablespoon has 4 teaspoons.
4.05 tsp 1 milliliter equals 0.202 US teaspoons. 1 teaspoon is 4.928 milliliters   One teaspoon is 5 ml, therefore 20 ml is equal to 4 teaspoons.   Also 1 tablespoon â¦ is 15 ml.   4 teaspoons = 20 ml.