How do I convert teaspoons to ml?
Type a value in either box, and the answer shows it in the other unit as you type.
- Milliliters (mL)
- 4.928922
1 tsp = 4.928922 mL.
Milliliters (mL): 4.928922. 1 tsp = 4.928922 mL.
Milliliters (mL) by teaspoons (tsp)
How to calculate
Converts teaspoons (tsp) to milliliters (mL) and back, with the exact unit definitions.
Example with the default inputs (Teaspoons (tsp) 1): 1 tsp = 4.928922 mL.
Formula: mL = tsp × 4.92892159375
- 1 teaspoon = 4.92892159375 milliliters, from the exact definitions in NIST SP 811.
- Cups, ounces, tablespoons, teaspoons, pints, quarts, and gallons are US customary units: 1 US cup is 8 US fluid ounces.
- Exact on the typed decimals: at most 6 decimal places (6 significant digits below 0.0001), rounded half up; an answer of 1 billion or more shows at most 15 significant digits.
Worked examples
Each example is checked against the calculator on every build.
- Teaspoons (tsp) 1 gives Milliliters (mL) 4.928922.Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Teaspoons (tsp) 3 gives Milliliters (mL) 14.786765.Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Milliliters (mL) 14.786765 gives Teaspoons (tsp) 3.Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8
Other questions people ask
How many milliliters are in a teaspoon?
1 teaspoon is 4.928922 milliliters, from the exact unit definitions (NIST SP 811).
How do I convert teaspoons to ml?
Multiply by 4.928922: mL = tsp × 4.92892159375. For example, 1 tsp × 4.928922 = 4.928922 mL.
How do I convert ml back to teaspoons?
Multiply by 0.202884, or type the milliliters into the second box and the converter works it out. 1 milliliter is 0.202884 teaspoons.
Is a teaspoon 5 mL?
A US teaspoon is 4.928922 mL. Metric measuring spoons hold 5 mL, and NIST's metric kitchen guide counts a teaspoon as 5 mL, 1.4% more.
How is a US teaspoon defined?
As 1/3 tablespoon or 1/6 US fluid ounce (NIST). A US fluid ounce is 1/128 of the US gallon of 3.785411784 L, so 1 tsp = 3,785.411784 mL ÷ 768 = 4.92892159375 mL.
How many mL are in 3 teaspoons?
14.786765 mL, which is 1 US tablespoon.