Convert teaspoons to milliliters
Teaspoon (tsp) to milliliter (ml). One teaspoon equals 4.9289 milliliters.
Formula
Teaspoon to milliliter conversion table
| Teaspoons | Milliliters | Milliliters | Teaspoons |
|---|---|---|---|
| 1 tsp | 4.9289 ml | 1 ml | 0.202884 tsp |
| 2 tsp | 9.8578 ml | 2 ml | 0.405768 tsp |
| 3 tsp | 14.7868 ml | 3 ml | 0.608652 tsp |
| 5 tsp | 24.6446 ml | 5 ml | 1.0144 tsp |
| 10 tsp | 49.2892 ml | 10 ml | 2.0288 tsp |
| 20 tsp | 98.5784 ml | 20 ml | 4.0577 tsp |
| 50 tsp | 246.45 ml | 50 ml | 10.1442 tsp |
| 100 tsp | 492.89 ml | 100 ml | 20.2884 tsp |
| 500 tsp | 2464.46 ml | 500 ml | 101.44 tsp |
| 1000 tsp | 4928.92 ml | 1000 ml | 202.88 tsp |
To convert teaspoons to milliliters, multiply the number of teaspoons by 4.9289. One teaspoon equals 4.9289 milliliters, and one milliliter equals 0.202884 teaspoons, so the relationship is fixed and exact. As a worked example, 10 tsp comes to 49.2892 ml. Enter your own figure in the converter above to get an instant answer, or use the swap button to flip the direction. This is a volume conversion, and like every tool on UnitGlide it runs locally in your browser with no account or upload required. The table further down shows a range of common teaspoon values already worked out in milliliters, plus the reverse milliliter to teaspoon direction, which is handy for quick reference or double-checking a result by hand.
Frequently asked questions
How many milliliters are in a teaspoon?
One teaspoon equals 4.9289 milliliters. The ratio is constant, so you can multiply any number of teaspoons by 4.9289 to get milliliters.
What is the formula to convert teaspoons to milliliters?
Use milliliters = teaspoons × 4.9289. UnitGlide applies this exact formula for every value, so results stay accurate across the whole range.
How do I convert milliliters back to teaspoons?
Go the other way by using one milliliter equals 0.202884 teaspoons. You can also press the swap button in the converter above to flip the direction in one click.
Is this teaspoon to milliliter converter accurate?
Yes. It uses internationally defined SI conversion factors, as maintained by the BIPM, and all math runs in your browser so nothing is rounded away on a server. For everyday use the displayed precision is more than enough.