999 metric teaspoons in US customary cups

Conversion formula
How to convert 999 metric teaspoons to US customary cups?

We know (by definition) that: $1\mathrm{brteaspoon}\approx 0.0211337641886519\mathrm{uscup}$

We can set up a proportion to solve for the number of US customary cups.

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

Conclusion: 999 ⁢ brteaspoon ≈ 21.112630424463248 ⁢ uscup

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US customary cup is equal to 0.0473650123123123 times 999 metric teaspoons.

It can also be expressed as: 999 metric teaspoons is equal to $\frac{1}{\mathrm{0.0473650123123123}}$ US customary cups.

Approximation

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