How it's calculated
tsp = mL ÷ T
mL = millilitres, tsp = teaspoons, T = mL per teaspoon (US customary 4.929, metric 5, UK imperial 5.919).
Common values
| Milliliters (mL) | Teaspoons (metric, 5 mL) |
|---|---|
| 5 | 1 |
| 10 | 2 |
| 15 | 3 |
| 25 | 5 |
Common questions
How many mL is a teaspoon?
A metric teaspoon is exactly 5 mL. The US customary teaspoon is 4.92892 mL, close enough that 5 mL is used in practice.
Should I dose medicine with a kitchen teaspoon?
No. The FDA recommends dosing liquid medicine in mL with a proper syringe or cup, since kitchen spoons vary widely.