428 metric teaspoons in US customary cups

Conversion formula
How to convert 428 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: 428 ⁢ brteaspoon ≈ 9.045251072743012 ⁢ uscup

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US customary cup is equal to 0.110555250700935 times 428 metric teaspoons.

It can also be expressed as: 428 metric teaspoons is equal to $\frac{1}{\mathrm{0.110555250700935}}$ US customary cups.

Approximation

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