21 milliliters in metric teaspoons

Result

The conversion result is: 21 milliliters is equivalent to 4.2 metric teaspoons.^[1]

Conversion formula
How to convert 21 milliliters to metric teaspoons?

We know (by definition) that: 1 ml ≈ 0.2 brteaspoon.

We can set up a proportion to solve for the number of metric teaspoons.

1 ml / 21 ml ≈ 0.2 brteaspoon / x brteaspoon

Now, we cross multiply to solve for our unknown x:

x brteaspoon ≈ (21 ml / 1 ml) * 0.2 brteaspoon → x brteaspoon ≈ 4.2 brteaspoon

Conclusion:

21 ml ≈ 4.2 brteaspoon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 metric teaspoon is equal to 0.238095238095238 times 21 milliliters.

It can also be expressed as: 21 milliliters is equal to 1 / 0.238095238095238 metric teaspoons.

Approximation

An approximate numerical result would be: twenty-one milliliters is about zero metric teaspoons, or alternatively, a metric teaspoon is about zero point two four times twenty-one milliliters.