Teaspoons to Millilitres Converter
1 teaspoon = 4.92892 millilitres.
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Result
1 teaspoon =
4.92892 mL
1 tsp × 4.92892 = 4.92892 mL
1 US cup = 16 tablespoons = 48 teaspoons = 236.6 mL
The working
- 1. Convert 1 tsp to millilitres: 1 × 4.92892 = 4.92892.
- 2. Convert to mL: 4.92892 ÷ 1 = 4.92892.
1 tsp in every unit
Cooking measures (US)
- 1 cup
- 16 tbsp · 48 tsp
- 1 tablespoon
- 3 tsp · 14.8 mL
- 1 fl oz
- 2 tbsp
Conversion table
Teaspoons to Millilitres
| Teaspoons | Millilitres |
|---|---|
| 0.25 | 1.2322 |
| 0.5 | 2.4645 |
| 1 | 4.9289 |
| 1.5 | 7.3934 |
| 2 | 9.8578 |
| 3 | 14.787 |
| 4 | 19.716 |
| 5 | 24.645 |
| 6 | 29.574 |
Millilitres to Teaspoons
| Millilitres | Teaspoons |
|---|---|
| 0.25 | 0.050721 |
| 0.5 | 0.10144 |
| 1 | 0.20288 |
| 1.5 | 0.30433 |
| 2 | 0.40577 |
| 3 | 0.60865 |
| 4 | 0.81154 |
| 5 | 1.0144 |
| 6 | 1.2173 |
Formula and worked example
millilitres = teaspoons × 4.928921594 (1 US teaspoon is 4.92892159375 mL).
Convert 1 teaspoon to millilitres: 1 × 4.9289216 = 4.92892 mL.
When you need this
Medicine doses and baking recipes often use teaspoons. A US teaspoon is about 4.93 mL, while a medical teaspoon is defined as exactly 5 mL, so always use the dosing syringe that comes with medicine.
Questions people ask
How many millilitres are in a teaspoon?
One teaspoon is 4.9289216 millilitres. 1 US teaspoon is 4.92892159375 mL.
How do I convert teaspoons to millilitres?
Multiply the number of teaspoons by 4.9289216.
What is 2 tsp in mL?
2 teaspoons is 9.85784 millilitres.
How do I convert millilitres back to teaspoons?
Multiply by 0.20288414: one millilitre is 0.20288414 teaspoons.
Related conversions
How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it. Source: NIST Special Publication 811, Guide for the Use of the International System of Units.
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