1 US tsp equals 4.92892159375 cm³. The name of a customary unit matters: US liquid and Imperial units are not interchangeable. US teaspoon (US tsp) is shown explicitly so a reader can recognize the term used in recipes and measuring tools.
US teaspoon and cubic centimetre belong to measurement conventions that may look familiar but are not always equivalent across countries. Mendeleev.com therefore keeps the system name next to the abbreviation and calculates from defined conversion factors rather than rounded kitchen rules.
1 US tsp = 4.92892159375 cm³ · 10 US tsp = 49.2892159375 cm³.
4.92892159375 cm³
The conversion keeps the physical quantity unchanged; only the unit used to express it changes. Apply the relation below, keep the unit with the number, and round only at the end.
1 US tsp = 4.92892159375 cm³ · 10 US tsp = 49.2892159375 cm³.