Convert from Teaspoon [US] to Tablespoon [metric]

Unit Definition (Teaspoon [US])
The teaspoon is a unit of volume used in food recipes. The U.S. teaspoon is equal to 1/3 tablespoon or 1/48 cup; this is equivalent to 1/6 fluid ounce, about 0.30 cubic inches, or approximately 4.9 milliliters.

Unit Definition (Tablespoon [metric])
The tablespoon is a unit of volume used in food recipes. Under the metric system the tablespoon has become more or less standardized at 15 milliliters in Britain, Canada, and New Zealand, 20 milliliters in Australia. The metric tablespoon equals 3 teaspoons (4 in Australia).