Milliliter to Teaspoon (US customary) Converter
1 milliliter is about 0.2028841362 US teaspoons. Convert milliliters (mL) to US teaspoons (tsp) below: type a value and the result updates as you type.
mL to tsp calculator
Result
Milliliter to Teaspoon (US customary) conversion
1 mL ≈ 0.2028841362 tspone milliliter in US teaspoons
1 tsp = 4.92892159375 mLone US teaspoon in milliliters
Milliliter (mL): One thousandth of a liter (1 cubic centimeter).
Teaspoon (US customary) (tsp): 1/3 of a US tablespoon. The US labeling teaspoon (exactly 5 mL) is a different, rounded unit.
Source:Milliliter: SI Brochure, 9th edition (BIPM, 2019); Teaspoon (US customary): NIST Special Publication 811 (2008), Appendix B.8 (US liquid measures derive from the exact 231 cubic inch gallon)
How to convert milliliters to US teaspoons
To convert milliliters to US teaspoons, divide the number of milliliters by 4.92892159375.
Formula
tsp = mL ÷ 4.92892159375
Examples
- 5 mL = 5 ÷ 4.92892159375 ≈ 1.014420681 tsp
- 25 mL = 25 ÷ 4.92892159375 ≈ 5.072103405 tsp
- 100 mL = 100 ÷ 4.92892159375 ≈ 20.28841362 tsp
Milliliter to Teaspoon (US customary) conversion table
| Milliliter (mL) | Teaspoon (US customary) (tsp) |
|---|---|
| 0.1 mL | 0.02028841362 tsp |
| 0.5 mL | 0.1014420681 tsp |
| 1 mL | 0.2028841362 tsp |
| 2 mL | 0.4057682724 tsp |
| 3 mL | 0.6086524086 tsp |
| 5 mL | 1.014420681 tsp |
| 10 mL | 2.028841362 tsp |
| 20 mL | 4.057682724 tsp |
| 25 mL | 5.072103405 tsp |
| 50 mL | 10.14420681 tsp |
| 100 mL | 20.28841362 tsp |
| 250 mL | 50.72103405 tsp |
| 500 mL | 101.4420681 tsp |
| 1000 mL | 202.8841362 tsp |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many US teaspoons are in one milliliter?
- One milliliter is about 0.2028841362 US teaspoons.
- How do I convert US teaspoons to milliliters?
- To convert US teaspoons to milliliters, multiply the number of US teaspoons by 4.92892159375. The formula is mL = tsp × 4.92892159375.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 4.92892159375 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a milliliter or a US teaspoon?
- A US teaspoon is 4.92892159375 times larger than a milliliter. In other words, a milliliter is about 0.2028841362 of a US teaspoon.