Tablespoons, teaspoons, and milliliters — the basics
American recipes usually measure volume with cups, tablespoons (abbreviated tbsp or T), and teaspoons (tsp or t). In the US customary system, 1 tablespoon equals 3 teaspoons — that ratio is fixed even when milliliters differ between countries.
By volume, one US tablespoon to milliliters is about 14.787 mL, and 1 tsp in ml is roughly 4.929 mL. So if a label asks for 15 milliliters to tablespoons, that is slightly more than one US tablespoon — about 1.01 tbsp. Metric recipes may list ml directly; this converter bridges US spoons and metric kitchens.
Tbsp is tablespoon in nearly every English-language cookbook. Tea spoon and table spoon (two words) mean the same measuring units — not the silverware in your drawer, but standardized measuring spoons sold in sets.