Teaspoon (Metric)
The metric teaspoon equals 5 milliliters, standardized to simplify cooking and medical measurements in countries that use the metric system. Unlike the US teaspoon, the metric teaspoon is slightly larger (5 mL vs ~4.92892 mL) and is widely used in recipes, pharmaceutical dosing, and nutrition labeling. Its simplicity ensures consistency across recipes and instructions internationally.
Fluid Ounce (US) (fl oz)
The US fluid ounce, symbol fl oz, measures approximately 29.5735 milliliters. Its origins trace back to the British Imperial fluid ounce but were standardized differently in the United States. It is used for liquids in cooking, beverages, and nutrition. Fluid ounces bridge smaller units, such as teaspoons and tablespoons, with larger units, including cups, pints, and gallons, providing flexibility and precision in culinary measurements.