Yes.
A teaspoon is a standard unit of measurement, commonly used in the United States and other countries following the imperial system. It is not a metric unit.
Millilitres is the standard. - 5 to a teaspoon.
Correct, that is a standard teaspoon.
A standard teaspoon holds 5ml. (So a teaspoon)
A millimetre is a unit of length. A teaspoon is a unit of capacity. The two units are therefore incompatible.
There are approximately 5 milliliters in a teaspoon.
A teaspoon is a unit of capacity. A gram is a unit of mass. Without some unit of density to convert, the two units are incompatible.
In some countries, the teaspoon is used as a unit of volume, especially in cooking recipes and pharmaceutic prescriptions. It is abbreviated in English as t. or tsp., German and Dutch: TL, from Teelöffel or Theelepel. It is often taken to mean 5 millilitres.
That is 1 standard teaspoon
1 metric teaspoon
A standard teaspoon holds about 5 milliliters of liquid.
5 ml of water is one standard cooking teaspoon .