Teaspoons to Milliliters Converter
Convert teaspoons to milliliters instantly. 1 tsp = 4.9289 mL. Free two-way converter with the formula and a quick reference table.
How to convert teaspoons to milliliters
milliliters = teaspoons × 4.9289
One teaspoon equals 4.9289 milliliters, so to convert teaspoons to milliliters you multiply by 4.9289. Going the other way, one milliliter is 0.202884 teaspoons. Both units measure volume, so the conversion is an exact ratio that never changes.
10 teaspoons = 49.2892 milliliters. Multiply your teaspoon figure by the factor above (or just type it into the box) to convert any amount.
teaspoons to milliliters table
| teaspoons (tsp) | milliliters (mL) |
|---|---|
| 1 | 4.9289 |
| 2 | 9.8578 |
| 3 | 14.7868 |
| 5 | 24.6446 |
| 10 | 49.2892 |
| 20 | 98.5784 |
| 25 | 123.22 |
| 50 | 246.45 |
| 100 | 492.89 |
| 250 | 1,232.23 |
| 500 | 2,464.46 |
| 1,000 | 4,928.92 |
Frequently asked questions
How many milliliters are in a teaspoon?
One teaspoon equals 4.9289 milliliters. So to convert, multiply the number of teaspoons by 4.9289.
How do I convert teaspoons to milliliters?
Multiply by 4.9289, or simply enter the value in the converter above — it does the math instantly and works both ways.
Is this conversion exact?
Yes — both units measure the same quantity, so the ratio is fixed and this uses the standard internationally-agreed factor.