Teaspoons to Milliliters Converter
Convert teaspoons to milliliters instantly. Free tsp to mL converter for cooking and medicine dosing.
What Is a Teaspoons to Milliliters Converter?
The teaspoon-to-milliliter conversion is critical in both cooking and medicine. For cooking, teaspoons measure small quantities of spices, extracts, and leavening agents where precision matters — too much baking soda can ruin a recipe. For medicine, the FDA warns against using kitchen teaspoons for liquid medications because household teaspoons can vary from 3-7 mL, potentially causing incorrect dosing. Always use a calibrated measuring device for medications.
The Conversion Formula
The formula to convert teaspoons to milliliters is:
Milliliters = Teaspoons × 4.92892
The reverse formula is: Teaspoons = Milliliters ÷ 4.92892
Teaspoons to Milliliters Reference Table
| Teaspoons (tsp) | Milliliters (mL) |
|---|---|
| 0.25 tsp | 1.23 mL |
| 0.5 tsp | 2.46 mL |
| 0.75 tsp | 3.70 mL |
| 1 tsp | 4.93 mL |
| 1.5 tsp | 7.39 mL |
| 2 tsp | 9.86 mL |
| 2.5 tsp | 12.32 mL |
| 3 tsp | 14.79 mL |
| 4 tsp | 19.72 mL |
| 5 tsp | 24.64 mL |
| 6 tsp | 29.57 mL |
| 8 tsp | 39.43 mL |
| 10 tsp | 49.29 mL |
| 12 tsp | 59.15 mL |
| 15 tsp | 73.93 mL |
| 20 tsp | 98.58 mL |
| 24 tsp | 118.29 mL |
| 32 tsp | 157.73 mL |
| 48 tsp | 236.59 mL |
| 96 tsp | 473.18 mL |
How to Use This Converter
- Enter your teaspoons value in the input field above.
- View the result — the milliliters equivalent appears instantly.
- For manual conversion, use the formula: Milliliters = Teaspoons × 4.92892.
- Check the reference table above for 20 pre-calculated common values.
Related Conversions
- Tablespoons to Milliliters Converter
- Cups to Milliliters Converter
- Milliliters to Cups Converter
- Ounces to Grams Converter
- Grams to Ounces Converter
All conversions are calculated client-side in your browser. No data is sent to any server. For the authoritative source on unit definitions, see the National Institute of Standards and Technology (NIST).
Frequently Asked Questions
How many mL are in a teaspoon?
One US teaspoon equals approximately 4.93 mL (commonly rounded to 5 mL). Medical dosing typically uses the 5 mL standard. Three teaspoons equal one tablespoon.
Is a teaspoon 5 mL or 4.93 mL?
A US teaspoon is officially 4.92892 mL, but the medical community standardizes it to 5 mL for dosing purposes. The difference (0.07 mL) is negligible for most cooking and medicine applications.
How do I measure medicine in teaspoons safely?
Use a proper medicine syringe or dosing cup marked in mL, not a kitchen teaspoon. Kitchen teaspoons vary in size (3-7 mL), which can lead to dangerous under- or over-dosing. The FDA recommends using mL-marked devices for all liquid medications.
How many teaspoons are in a tablespoon?
There are exactly 3 teaspoons in 1 tablespoon. This is one of the most fundamental cooking conversions: 1 tbsp = 3 tsp = ~15 mL.
The tools and calculators provided on The Simple Toolbox are intended for educational and informational purposes only. They do not constitute financial, legal, tax, or professional advice. While we strive to keep calculations accurate, numbers are based on user inputs and standard assumptions that may not apply to your specific situation. Always consult with a certified professional (such as a CPA, financial advisor, or attorney) before making significant financial or business decisions.
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