Unit Definition (Tablespoon [US])
The tablespoon is a unit of volume used in food recipes. In the U.S., the tablespoon is equal to 1/2 fluid ounce; this is about 14.8 milliliters. In Canada, the traditional tablespoon is 1/2 Imperial fluid ounce (14.2 milliliters). The U.S. tablespoon equals 3 teaspoons or 1/16 cup.

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.