Conversion formula

The conversion factor from teaspoons to milliliters is 4.92892161458, which means that 1 teaspoon is equal to 4.92892161458 milliliters:

1 tsp = 4.92892161458 ml

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

1 tsp → 4.92892161458 ml

0.4 tsp → V_(ml)

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

V_(ml) = 0.4 tsp × 4.92892161458 ml

V_(ml) = 1.971568645832 ml

The final result is:

0.4 tsp → 1.971568645832 ml

We conclude that 0.4 teaspoons is equivalent to 1.971568645832 milliliters:

0.4 teaspoons = 1.971568645832 milliliters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 milliliter is equal to 0.50721033838414 × 0.4 teaspoons.

Another way is saying that 0.4 teaspoons is equal to 1 ÷ 0.50721033838414 milliliters.

Approximate result

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

0.4 tsp ≅ 1.972 ml

An alternative is also that one milliliter is approximately zero point five zero seven times zero point four teaspoons.

Conversion table

teaspoons to milliliters chart

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