How to convert teaspoons to milliliters
Formula: ml = tsp × 4.92892
Worked example: 2 tsp → 2 × 4.92892 = 9.85784 ml
One US teaspoon is 4.93 ml, rounded to 5 ml almost everywhere. Kitchen teaspoons vary a lot in size, so for children’s medicine always use a dosing syringe marked in milliliters.
Teaspoons to milliliters conversion chart
| Teaspoons (tsp) | Milliliters (ml) |
|---|---|
| 0.25 tsp | 1.23223 ml |
| 0.5 tsp | 2.46446 ml |
| 1 tsp | 4.92892 ml |
| 1.5 tsp | 7.39338 ml |
| 2 tsp | 9.85784 ml |
| 3 tsp | 14.7868 ml |
| 4 tsp | 19.7157 ml |
| 5 tsp | 24.6446 ml |
| 6 tsp | 29.5735 ml |
| 8 tsp | 39.4314 ml |
| 10 tsp | 49.2892 ml |
| 12 tsp | 59.1471 ml |
What is a teaspoon?
The US teaspoon is one third of a tablespoon, about 4.93 ml, and is usually rounded to 5 ml. It measures salt, baking powder, spices and extracts. For medicine, use the syringe or cup supplied with the product rather than a kitchen spoon.
What is a milliliter?
The milliliter is one thousandth of a liter, exactly the volume of a cubic centimeter. It is the unit of medicine doses, perfume and cosmetics, and of drink labels in most countries; US bottles show it next to fluid ounces, as in 16.9 fl oz (500 ml).