Milliliters to Teaspoons
Type milliliters (mL), see US teaspoons (tsp).
By Akash Yadav Updated 27 September 2026
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The formula
How to convert milliliters to teaspoons
To change milliliters into teaspoons, multiply by 0.202884136211.
teaspoons = milliliters × 0.202884136211
Going the other way: milliliters = teaspoons × 4.92892159375
1 milliliter = 0.20288414 teaspoons. This factor does not end, so results on this page are rounded.
Worked example
You have 10 milliliters. Multiply by 0.202884136211. 10 × 0.202884136211 = 2.0288 tsp.
Common values
Milliliters to teaspoons conversion table
| Milliliters (mL) | Teaspoons (tsp) |
|---|---|
| 0.5 mL | 0.1014 tsp |
| 1 mL | 0.2029 tsp |
| 2 mL | 0.4058 tsp |
| 2.5 mL | 0.5072 tsp |
| 3 mL | 0.6087 tsp |
| 4 mL | 0.8115 tsp |
| 5 mL | 1.0144 tsp |
| 7.5 mL | 1.5216 tsp |
| 10 mL | 2.0288 tsp |
| 12.5 mL | 2.5361 tsp |
| 15 mL | 3.0433 tsp |
| 20 mL | 4.0577 tsp |
| 25 mL | 5.0721 tsp |
| 30 mL | 6.0865 tsp |
Before you rely on it
For medicine, keep it in milliliters
This page converts to the US customary teaspoon, 4.92892159375 mL, so 5 mL comes out at about 1.01 tsp. That extra hundredth is real but no spoon can measure it.
Metric recipes and pharmacy labels define the teaspoon as exactly 5 mL. If your recipe or label is metric, divide the milliliters by 5 and you are done.
A dose written in mL should be measured in mL, with the oral syringe or dosing cup supplied — never with a kitchen teaspoon, which varies a lot in size.
Three teaspoons make one tablespoon in the US, UK and most metric systems. Australia is the exception, where a 20 mL tablespoon holds four.
Common questions
Frequently asked questions
How many teaspoons is 5 mL?
5 mL is about 1.014 US teaspoons — and exactly 1 metric teaspoon, the one medicine labels use.
How many teaspoons is 10 mL?
10 mL is about 2.029 US teaspoons, or 2 metric teaspoons.
How many teaspoons is 2.5 mL?
2.5 mL is about 0.507 US teaspoons — half a metric teaspoon.
How many teaspoons is 15 mL?
15 mL is about 3.043 US teaspoons — 3 metric teaspoons, which is one tablespoon.
How many teaspoons is 1 mL?
1 mL is about 0.203 US teaspoons — a fifth of a teaspoon.
Can I use a kitchen spoon for a 5 mL dose?
It is not recommended. Kitchen spoons vary widely in size; measure medicine with the oral syringe or dosing cup supplied with it.
Keep going
Related converters
- Teaspoons to Milliliters tsp → mL
- Milliliters to Tablespoons mL → tbsp
- Milliliters to Ounces mL → fl oz
- All volume converters
Every factor on this page is listed in our conversion methodology.