Teaspoons (US) to Milliliters
Convert teaspoons (us) to milliliters instantly and accurately, both ways.
🔒 Instant, accurate, and runs entirely in your browser
Formula: 1 tsp = 4.9289 mL
Teaspoons (US) to Milliliters
To convert teaspoons (us) to milliliters, multiply the value by 4.9289. For example, 1 tsp is 4.9289 mL. Type any number above and the result updates instantly — and you can convert in the other direction just as easily. Everything runs in your browser.
Teaspoons (US) to Milliliters conversion table
| Teaspoons (US) (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 |
| 6 tsp | 29.5735 mL |
| 8 tsp | 39.4314 mL |
| 10 tsp | 49.2892 mL |
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How it works
Three steps. No sign-up, no upload, no wait.
1
Enter a value
Type a number of teaspoons (us) in the first box.
2
Read the result
The value in milliliters updates instantly.
3
Convert either way
You can also type in the milliliters box to convert back.
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Frequently Asked Questions
How many milliliters are in a teaspoon (us)? ▼
One teaspoon (us) equals 4.9289 milliliters.
What is the formula to convert teaspoons (us) to milliliters? ▼
Use
1 tsp = 4.9289 mL.Is this converter accurate? ▼
Yes — it uses the exact internationally-defined conversion factor and updates live as you type. It runs entirely in your browser.
Do I need to install anything or sign up? ▼
No. It works instantly in your browser — no account, no install, nothing uploaded.