How many milliliters are in 1 teaspoon?

A teaspoon is a commonly used unit of volume in cooking and medicine. The standard conversion for teaspoons to milliliters is well-established in measurement references. Specifically, one teaspoon is equivalent to approximately 4.74 milliliters.

This conversion is important in various contexts where precise measurements are required, such as in cooking or pharmaceutical dosages. Knowing that a teaspoon measures around 4.74 ml helps ensure accuracy in these scenarios, particularly when recipes or medications rely on specific dosages.

The other choices reflect common misunderstandings or varying definitions of volume measurements, but the consensus in the culinary and medical communities supports 4.74 ml as the correct conversion for a teaspoon.