21 US customary cups in metric teaspoons

Conversion formula
How to convert 21 US customary cups to metric teaspoons?

We know (by definition) that: $1\mathrm{uscup}\approx 47.3176473\mathrm{brteaspoon}$

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

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

Conclusion: 21 ⁢ uscup ≈ 993.6705933 ⁢ brteaspoon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 metric teaspoon is equal to 0.00100636972326914 times 21 US customary cups.

It can also be expressed as: 21 US customary cups is equal to $\frac{1}{\mathrm{0.00100636972326914}}$ metric teaspoons.

Approximation

An approximate numerical result would be: twenty-one US customary cups is about nine hundred and ninety-three point six six metric teaspoons, or alternatively, a metric teaspoon is about zero times twenty-one US customary cups.