Teaspoon to Milliliter Converter
One Teaspoon equals 4.928921594 Milliliter (1 tsp = 4.928921594 ml). Multiply a Teaspoon value by 4.928921594 to get the equivalent in Milliliter. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
ml = tsp × 4.928921594
Multiply the Teaspoon value by 4.928921594 to get the equivalent value in Milliliter.
Example Conversions
1 Teaspoon (tsp)
4.928921594 Milliliter (ml)
5 Teaspoon (tsp)
24.64460797 Milliliter (ml)
10 Teaspoon (tsp)
49.28921594 Milliliter (ml)
25 Teaspoon (tsp)
123.2230398 Milliliter (ml)
100 Teaspoon (tsp)
492.8921594 Milliliter (ml)
Conversion Table
| Teaspoon (tsp) | Milliliter (ml) |
|---|---|
| 0.1 | 0.4928921594 |
| 0.5 | 2.464460797 |
| 1 | 4.928921594 |
| 2 | 9.857843188 |
| 5 | 24.64460797 |
| 10 | 49.28921594 |
| 25 | 123.2230398 |
| 50 | 246.4460797 |
| 100 | 492.8921594 |
| 250 | 1232.230398 |
| 500 | 2464.460797 |
| 1000 | 4928.921594 |
How to Convert Manually
Use these steps to convert Teaspoon values to Milliliter without the calculator.
- Write down the value in Teaspoon (tsp) that you want to convert.
- Multiply that value by 4.928921594.
- For example, 10 Teaspoon × 4.928921594 = 49.28921594 Milliliter.
- Label the result as Milliliter (ml).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Teaspoon and one Milliliter.
About Teaspoon and Milliliter
The teaspoon is about 4.93 milliliters in US recipe measure, one third of a tablespoon. Baking ingredients like spices, salt, and leavening are specified in teaspoons. The milliliter is one thousandth of a liter, identical to one cubic centimeter. Medicine doses, cosmetics, and recipe liquids are measured in milliliters. One Teaspoon equals 4.928921594 Milliliter (1 tsp = 4.928921594 ml). Teaspoon to Milliliter conversion comes up most often in baking spices and leavening and in liquid medicine dosing at home, typically when figures need restating for liquid medicine doses.
Precision and Rounding: US and imperial volume units share names but differ in size (an imperial gallon is about 20% larger than a US gallon), so confirm which system a figure uses before converting. Kitchen work tolerates rounding to the nearest milliliter or quarter-teaspoon; fuel, chemistry, and brewing need three or more decimal places.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Teaspoon equals 73.93382391 Milliliter.
15 tsp × 4.928921594 = 73.93382391 ml
FAQ
How do I convert Teaspoon to Milliliter?
Multiply the Teaspoon value by 4.928921594 to get the equivalent value in Milliliter.
What is the formula for Teaspoon to Milliliter?
The formula is ml = tsp × 4.928921594.
How many Milliliter are in 1 Teaspoon?
1 Teaspoon equals 4.928921594 Milliliter.
Can I convert Milliliter back to Teaspoon?
Yes. 1 Milliliter equals 0.2028841362 Teaspoon, and the related converter can reverse the calculation.
What are common names for Teaspoon and Milliliter?
Teaspoon is shown as tsp and may also be searched as teaspoons. Milliliter is shown as ml and may also be searched as milliliters, millilitre, millilitres.
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