How to convert milliliters to teaspoons
To convert milliliters to teaspoons, multiply by 0.202884136211. Volume conversions help with recipes, fuel, beverages, aquariums and laboratory work. US customary units are used here.
Milliliter to Teaspoon conversion table
| Milliliter (mL) | Teaspoon (tsp) |
|---|---|
| 0.1 mL | 0.0202884136211 tsp |
| 0.5 mL | 0.101442068106 tsp |
| 1 mL | 0.202884136211 tsp |
| 2 mL | 0.405768272422 tsp |
| 3 mL | 0.608652408633 tsp |
| 4 mL | 0.811536544844 tsp |
| 5 mL | 1.01442068106 tsp |
| 10 mL | 2.02884136211 tsp |
| 20 mL | 4.05768272422 tsp |
| 25 mL | 5.07210340528 tsp |
| 50 mL | 10.1442068106 tsp |
| 100 mL | 20.2884136211 tsp |
| 500 mL | 101.442068106 tsp |
| 1,000 mL | 202.884136211 tsp |
About the units
Milliliter (mL)
A milliliter is one thousandth of a liter, equal to one cubic centimeter.
Teaspoon (tsp)
A US teaspoon is 1/6 of a US fluid ounce, about 4.93 mL.
How to use this converter
- Type the number of milliliters (mL) in the input box.
- The result in teaspoons appears instantly — no button needed.
- See the same value in every other volume unit just below.
- Use “Swap units” to convert teaspoons back to milliliters.
When you’ll use the milliliter to teaspoon conversion
Converting milliliters to teaspoons comes up more often than you might expect — for example when filling an aquarium, pool or watering can, mixing cleaning solutions correctly, or scaling a recipe from cups to milliliters. Type your number once and you get the exact answer plus every related unit, so you don’t need to convert twice.
💡 For a quick estimate in your head, multiply by about 0.2 (the exact factor is 0.202884136211).
Watch out for these mix-ups
- US gallons are smaller than UK (imperial) gallons — about 3.785 L vs 4.546 L.
- A US cup is 236.6 mL, but nutrition labels round it to 240 mL.
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 teaspoons are in one milliliter?
One milliliter equals 0.202884136211 teaspoons. 0.202884136211 is the exact factor used by this converter.
How do I convert milliliters to teaspoons?
Multiply the value in milliliters by 0.202884136211. To go the other way, multiply teaspoons by 4.92892159375.
What is 10 mL in tsp?
10 mL = 2.02884136211 tsp. Also, 5 mL = 1.01442068106 tsp and 100 mL = 20.2884136211 tsp.
What is the difference between a milliliter and a teaspoon?
A milliliter is one thousandth of a liter, equal to one cubic centimeter. A US teaspoon is 1/6 of a US fluid ounce, about 4.93 mL.
Is this tool free and private?
Yes — the Milliliter to Teaspoon 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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