How it's calculated
mL = tsp × T
tsp = teaspoons, mL = millilitres, T = mL per teaspoon (US customary 4.929, metric 5, UK imperial 5.919).
Common values
| Teaspoons | mL (metric) | mL (US) |
|---|---|---|
| 1 | 5.00 | 4.93 |
| 2 | 10.00 | 9.86 |
| 3 | 15.00 | 14.79 |
Common questions
How many mL in a teaspoon?
A metric teaspoon is exactly 5 mL, and the US customary teaspoon is about 4.93 mL. The small difference rarely matters in cooking.
Can I use a kitchen teaspoon to dose medicine?
No. The FDA advises measuring liquid medicine in mL with a proper dosing tool, since kitchen spoons vary too much.