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 640 milliliters into teaspoons we have to multiply 640 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

640 ml → V_(tsp)

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

V_(tsp) = 640 ml × 0.20288413535365 tsp

V_(tsp) = 129.84584662634 tsp

The final result is:

640 ml → 129.84584662634 tsp

We conclude that 640 milliliters is equivalent to 129.84584662634 teaspoons:

640 milliliters = 129.84584662634 teaspoons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 teaspoon is equal to 0.0077014400227813 × 640 milliliters.

Another way is saying that 640 milliliters is equal to 1 ÷ 0.0077014400227813 teaspoons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred forty milliliters is approximately one hundred twenty-nine point eight four six teaspoons:

640 ml ≅ 129.846 tsp

An alternative is also that one teaspoon is approximately zero point zero zero eight times six hundred forty 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