Milliliters to Teaspoons (ml to tsp)
1 mL = 0.202884 tsp
To convert milliliters to US teaspoons: US teaspoons = milliliters ÷ 4.92892
| milliliters | US teaspoons |
|---|---|
| 1 mL | 0.2029 tsp |
| 2.5 mL | 0.5072 tsp |
| 5 mL | 1.014 tsp |
| 7.5 mL | 1.522 tsp |
| 10 mL | 2.029 tsp |
| 15 mL | 3.043 tsp |
| 20 mL | 4.058 tsp |
| 30 mL | 6.087 tsp |
| 50 mL | 10.14 tsp |
| 100 mL | 20.29 tsp |
Metric teaspoon (medicine labels): exactly 5 ml, so ml ÷ 5 = teaspoons. 7.5 ml = 1½ tsp, 12.5 ml = 2½ tsp.
A US teaspoon is 4.92892 ml (1/6 of a US fluid ounce, NIST Handbook 44), so divide milliliters by 4.929. Medicine labels and most of the world use the metric teaspoon of exactly 5 ml, so for a dose the rule is simpler: every 5 ml is one teaspoon.
Formula
US teaspoons = milliliters ÷ 4.92892
Example: 2.5 milliliters = 0.50721 US teaspoons.
Milliliters to Teaspoons chart
| milliliters | US teaspoons |
|---|---|
| 1 | 0.202884 |
| 1.25 | 0.253605 |
| 2 | 0.405768 |
| 2.5 | 0.50721 |
| 3 | 0.608652 |
| 4 | 0.811537 |
| 5 | 1.01442 |
| 7.5 | 1.52163 |
| 10 | 2.02884 |
| 12.5 | 2.53605 |
| 15 | 3.04326 |
| 20 | 4.05768 |
| 25 | 5.0721 |
| 30 | 6.08652 |
| 50 | 10.1442 |
| 100 | 20.2884 |
Good to know
Medicine: a dosing cup or syringe marked 5 ml is one teaspoon, 2.5 ml is half a teaspoon and 10 ml is two. Use the syringe or cup that comes with the medicine rather than a kitchen spoon, which can hold anywhere from 3 to 7 ml.
Recipes: 15 ml is one tablespoon (3 teaspoons) and 30 ml is 2 tablespoons, about 1 US fluid ounce. For larger amounts use ml to oz or the volume converter; for dry ingredients by weight, the grams to teaspoons converter uses each ingredient's density.
The US and metric teaspoons differ by 1.4%, which matters only for large batches: 100 ml is 20.3 US teaspoons but exactly 20 metric ones.
Frequently asked questions
How many teaspoons is 5 ml?
5 ml is 1.01 US teaspoons, and exactly 1 metric teaspoon.
How many teaspoons is 30 ml?
30 ml is 6.09 US teaspoons (6 metric teaspoons), which is 2 tablespoons.
How many ml are in a teaspoon?
A US teaspoon is 4.93 ml; the metric teaspoon used on medicine labels is 5 ml.
Is 2.5 ml half a teaspoon?
Yes. 2.5 ml is half a metric teaspoon (0.51 US teaspoons).