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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.
, Does the cooking at home. 1  No. One tablespoon contains three teaspoons, so one teaspoon is 1/3 of a tablespoon. 2  That depends on where you are in the world. A teaspoon is 5ml and a tablespoon is 15ml in the USA but in Australia it's 20ml so a teaspoon is only a 1/4 of a tablespoon there.