Convert Milliliters to US teaspoons
1 milliliter is 0.2 tsp. One milliliter is exactly 0.202884136211 US teaspoons.
One milliliter is 0.20288414 US teaspoons. To convert milliliters to US teaspoons, multiply by 0.20288414; to go the other way, divide by 0.20288414 or multiply by 4.9289216. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and it follows from NIST Handbook 130. One thousandth of a liter, and exactly one cubic centimeter.
Factor checked against the defining standard · How we check
- Milliliters × 0.20288414
1 * 0.20288410.203 tsp
1 milliliter in every volume unit
| Unit | Value | Exact factor |
|---|---|---|
| US teaspoons | 0.2028841362 tsp | × 0.202884136211 |
| US tablespoons | 0.0676280454 tbsp | × 0.0676280454037 |
| US fluid ounces | 0.0338140227 fl oz | × 0.0338140227018 |
| US cups | 0.004226752838 cup | × 0.00422675283773 |
| US pints | 0.002113376419 pt | × 0.00211337641887 |
| US quarts | 0.001056688209 qt | × 0.00105668820943 |
| US gallons | 0.0002641720524 gal | × 0.000264172052358 |
| milliliters (as entered) | 1 ml | — |
| liters | 0.001 L | × 0.001 |
| imperial gallons | 0.0002199692483 gal (UK) | × 0.000219969248299 |
| imperial quarts | 0.0008798769932 qt (UK) | × 0.000879876993196 |
| imperial pints | 0.001759753986 pt (UK) | × 0.00175975398639 |
| imperial fluid ounces | 0.03519507973 fl oz (UK) | × 0.0351950797279 |
| imperial gills | 0.007039015946 gi (UK) | × 0.00703901594557 |
| cubic millimetres | 1,000 mm³ | × 1,000 |
| cubic centimetres | 1 cm³ | × 1 |
| cubic inches | 0.06102374409 in³ | × 0.0610237440947 |
| cubic feet | 0.00003531466672 ft³ | × 0.0000353146667215 |
| cubic yards | 0.000001307950619 yd³ | × 0.00000130795061931 |
| cubic metres | 0.000001 m³ | × 0.000001 |
Factors are entered by hand from NIST Handbook 130 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
The same converter answers this pair however it is written: millilitres to US teaspoons is the British spelling of the same units — the metre and the litre are spelled that way outside the United States and the quantity does not change.
How do you convert milliliters to US teaspoons? The converter and the working
- 1.Take the measurement in milliliters.
- 2.Multiply by 0.20288414 — that is how many US teaspoons fit in one milliliter.
- 3.To go back the other way, divide by 0.20288414, or multiply by 4.9289216.
Worked example: 25 milliliters to US teaspoons
- Formula
- ml × 0.20288414 = tsp
- Arithmetic
- 25 × 0.20288414 = 5.07 tsp
- Answer
- 25 ml = 5.07 tsp
The factor is rounded for display; the figure above is computed from the full value.
Milliliters to US teaspoons conversion table
| Milliliters | US teaspoons |
|---|---|
| 1 ml | 0.2 tsp |
| 2 ml | 0.41 tsp |
| 3 ml | 0.61 tsp |
| 4 ml | 0.81 tsp |
| 5 ml | 1.01 tsp |
| 6 ml | 1.22 tsp |
| 7 ml | 1.42 tsp |
| 8 ml | 1.62 tsp |
| 9 ml | 1.83 tsp |
| 10 ml | 2.03 tsp |
| 12 ml | 2.43 tsp |
| 15 ml | 3.04 tsp |
| 20 ml | 4.06 tsp |
| 25 ml | 5.07 tsp |
| 50 ml | 10.14 tsp |
| 100 ml | 20.29 tsp |
| 200 ml | 40.58 tsp |
| 300 ml | 60.87 tsp |
| 500 ml | 101.44 tsp |
| 1000 ml | 202.88 tsp |
| 2000 ml | 405.77 tsp |
| 5000 ml | 1,014.42 tsp |
| 10000 ml | 2,028.84 tsp |
What is a milliliter?
One thousandth of a liter, and exactly one cubic centimeter.
What is a US teaspoon?
One third of a tablespoon, about 4.93 ml. A metric teaspoon is a round 5 ml, which is why recipes rarely notice the difference.
How many US teaspoons are in a milliliter?
One milliliter is 0.20288414 US teaspoons. Going the other way, one US teaspoon is 4.9289216 milliliters. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every volume unit here
The whole group — 20 units with their symbols and the size of each one in liters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a milliliter.
Cite this page
- APA
- Rule Calculator. (2026). Convert Milliliters to US teaspoons. Rule Calculator. https://rulecalculators.com/convert/milliliter-to-teaspoon
- MLA
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- Chicago
- Rule Calculator. "Convert Milliliters to US teaspoons." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/milliliter-to-teaspoon.
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Questions people actually ask
- How many US teaspoons are in a milliliter?
- 0.20288414. One third of a tablespoon, about 4.93 ml. A metric teaspoon is a round 5 ml, which is why recipes rarely notice the difference.
- How do I convert US teaspoons back to milliliters?
- Divide by 0.20288414, or multiply by 4.9289216 — they are the same operation.
The values people look up
Each one is this page with the value filled in, and each answers in its own title.
Other volume conversions
US teaspoons to milliliters — the same conversion the other way.