Convert teaspoons to milliliters instantly. Enter a value below, or use the formula and reference table further down the page.
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How to convert teaspoons to milliliters
Multiply the value by 4.92892159.
mL = tsp × 4.92892159Example: 10 tsp = 49.2892 mL.
Teaspoons to Milliliters conversion table
| Teaspoons (tsp) | Milliliters (mL) |
|---|---|
| 1 tsp | 4.9289 mL |
| 2 tsp | 9.8578 mL |
| 3 tsp | 14.7868 mL |
| 4 tsp | 19.7157 mL |
| 5 tsp | 24.6446 mL |
| 10 tsp | 49.2892 mL |
| 15 tsp | 73.9338 mL |
| 20 tsp | 98.5784 mL |
| 25 tsp | 123.223 mL |
| 50 tsp | 246.4461 mL |
| 100 tsp | 492.8922 mL |
Frequently asked questions
How many milliliters is 1 teaspoon?
1 teaspoon equals 4.9289 milliliters.
What is the formula to convert tsp to mL?
To convert tsp to mL, multiply the value by 4.92892159. The full formula is: mL = tsp × 4.92892159.
How do I convert milliliters back to teaspoons?
Use the same calculator above and type your value into the milliliters field instead — it converts in both directions. Or use the reverse formula: tsp = mL ÷ 4.92892159.
Is the tsp to mL conversion exact?
The conversion factor used here (4.92892159) is the standard internationally defined value. Results on this page are rounded to four decimal places for readability.