However, it's important to note that this is a rough conversion. The actual volume of a teaspoon can vary slightly depending on the size of the spoon.

Here's a more precise breakdown:

* US Teaspoon: 4.929 ml

* UK Teaspoon: 5.919 ml

* Metric Teaspoon: 5 ml

So, when following a recipe, it's best to use a measuring spoon specifically designed for the type of teaspoon required (US, UK, or metric).