How to convert teaspoons to milliliters
To convert teaspoons to milliliters, multiply by 4.92892159375. Volume conversions help with recipes, fuel, beverages, aquariums and laboratory work. US customary units are used here.
Teaspoon to Milliliter conversion table
| Teaspoon (tsp) | Milliliter (mL) |
|---|---|
| 0.1 tsp | 0.492892159375 mL |
| 0.5 tsp | 2.46446079688 mL |
| 1 tsp | 4.92892159375 mL |
| 2 tsp | 9.8578431875 mL |
| 3 tsp | 14.7867647813 mL |
| 4 tsp | 19.715686375 mL |
| 5 tsp | 24.6446079688 mL |
| 10 tsp | 49.2892159375 mL |
| 20 tsp | 98.578431875 mL |
| 25 tsp | 123.223039844 mL |
| 50 tsp | 246.446079688 mL |
| 100 tsp | 492.892159375 mL |
| 500 tsp | 2,464.46079688 mL |
| 1,000 tsp | 4,928.92159375 mL |
About the units
Teaspoon (tsp)
A US teaspoon is 1/6 of a US fluid ounce, about 4.93 mL.
Milliliter (mL)
A milliliter is one thousandth of a liter, equal to one cubic centimeter.
How to use this converter
- Type the number of teaspoons (tsp) in the input box.
- The result in milliliters appears instantly — no button needed.
- See the same value in every other volume unit just below.
- Use “Swap units” to convert milliliters back to teaspoons.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many milliliters are in one teaspoon?
One teaspoon equals 4.92892159375 milliliters. 4.92892159375 is the exact factor used by this converter.
How do I convert teaspoons to milliliters?
Multiply the value in teaspoons by 4.92892159375. To go the other way, multiply milliliters by 0.202884136211.
What is 10 tsp in mL?
10 tsp = 49.2892159375 mL. Also, 5 tsp = 24.6446079688 mL and 100 tsp = 492.892159375 mL.
What is the difference between a teaspoon and a milliliter?
A US teaspoon is 1/6 of a US fluid ounce, about 4.93 mL. A milliliter is one thousandth of a liter, equal to one cubic centimeter.
Is this tool free and private?
Yes — the Teaspoon to Milliliter is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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