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Volume
Milliliters to Teaspoons
Convert milliliters (mL) to teaspoons (tsp). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 mL = 0.202884 tsp
Milliliters to Teaspoons Conversion Table
Common values, ready to copy:
| milliliters | teaspoons |
|---|---|
| 1 mL | 0.202884 tsp |
| 2 mL | 0.405768 tsp |
| 5 mL | 1.0144 tsp |
| 10 mL | 2.0288 tsp |
| 25 mL | 5.0721 tsp |
| 50 mL | 10.1442 tsp |
| 100 mL | 20.2884 tsp |
| 1,000 mL | 202.88 tsp |
Formula
teaspoons = milliliters × 2.02884202e-1
Volume conversions use US customary measure (the cup, fluid ounce, and gallon are US definitions, not imperial). 1 US cup = 236.588 mL, 1 US gallon = 3.785411784 L.
About Milliliters and Teaspoons
Milliliters (mL): One thousandth of a liter, where the liter is defined as one cubic decimeter; not strictly an SI unit (the SI volume unit is the cubic meter) but universal in cooking, medicine, and chemistry. Common uses: Liquid medication dosing, lab work, cooking (especially in metric countries), bartending, and any small-volume liquid measurement.
Teaspoons (tsp): Standardized at about 5 mL for cooking purposes; US legal definition is exactly 4.92892 mL, but international cooking convention uses 5 mL even in the US. Common uses: Small cooking measurements (spices, baking powder, vanilla extract), liquid medication dosing for adults (often 1 or 2 teaspoons = 5 or 10 mL).
How the conversion works
Volume conversions use US customary measure (the cup, fluid ounce, and gallon are US definitions, not imperial). 1 US cup = 236.588 mL, 1 US gallon = 3.785411784 L.
The exact relationship is teaspoons = milliliters × 2.02884202e-1, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.
When this conversion matters
Converting between milliliters and teaspoons comes up wherever volume measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.