## Conversion formula

The conversion factor from milliliters to teaspoons is 0.20288413535365, which means that 1 milliliter is equal to 0.20288413535365 teaspoons:

1 ml = 0.20288413535365 tsp

To convert 0.4 milliliters into teaspoons we have to multiply 0.4 by the conversion factor in order to get the volume amount from milliliters to teaspoons. We can also form a simple proportion to calculate the result:

1 ml → 0.20288413535365 tsp

0.4 ml → V(tsp)

Solve the above proportion to obtain the volume V in teaspoons:

V(tsp) = 0.4 ml × 0.20288413535365 tsp

V(tsp) = 0.081153654141462 tsp

The final result is:

0.4 ml → 0.081153654141462 tsp

We conclude that 0.4 milliliters is equivalent to 0.081153654141462 teaspoons:

0.4 milliliters = 0.081153654141462 teaspoons

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 teaspoon is equal to 12.32230403645 × 0.4 milliliters.

Another way is saying that 0.4 milliliters is equal to 1 ÷ 12.32230403645 teaspoons.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that zero point four milliliters is approximately zero point zero eight one teaspoons:

0.4 ml ≅ 0.081 tsp

An alternative is also that one teaspoon is approximately twelve point three two two times zero point four milliliters.

## Conversion table

### milliliters to teaspoons chart

For quick reference purposes, below is the conversion table you can use to convert from milliliters to teaspoons

milliliters (ml) teaspoons (tsp)
1.4 milliliters 0.284 teaspoons
2.4 milliliters 0.487 teaspoons
3.4 milliliters 0.69 teaspoons
4.4 milliliters 0.893 teaspoons
5.4 milliliters 1.096 teaspoons
6.4 milliliters 1.298 teaspoons
7.4 milliliters 1.501 teaspoons
8.4 milliliters 1.704 teaspoons
9.4 milliliters 1.907 teaspoons
10.4 milliliters 2.11 teaspoons