Convert Milliliter (mL) to Teaspoon (US) (tsp (US)) instantly.
About these units
Milliliter (mL)
A milliliter, defined as 1/1,000 of a liter or precisely 1 cubic centimeter, is a small but enormously significant volume unit in cooking, medicine, pharmacy, and laboratory science. Medical syringes, dosing spoons, and IV solutions rely heavily on milliliter accuracy. In laboratories, mL measurements are routine for preparing reagents, dilutions, and biological media. Because 1 mL = 1 cm³, many devices use either notation interchangeably depending on context. Despite its small size, the milliliter is commonly used in daily life as well—perfume bottles, beverage labels, and household cleaners often list contents in milliliters. Its precision and simplicity make the milliliter one of the world's most practical measurement units.
Teaspoon (US) (tsp (US))
The US teaspoon equals 4.92892 mL, though rounded to 5 mL in most practical applications. Before standardization, teaspoon sizes varied widely across households and manufacturers. With the rise of packaged foods, pharmaceuticals, and industrial recipes, the US standardized teaspoon values brought consistency to cooking and medicine. Today, the teaspoon remains the most common household unit for measuring small amounts—especially spices, extracts, and medicines.