21 US quarts in dry quarts

Conversion formula
How to convert 21 US quarts to dry quarts?

We know (by definition) that: $1\mathrm{usquart}\approx 0.859367007375303\mathrm{dryquart}$

We can set up a proportion to solve for the number of dry quarts.

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

Conclusion: 21 ⁢ usquart ≈ 18.046707154881364 ⁢ dryquart

Conversion in the opposite direction

The inverse of the conversion factor is that 1 dry quart is equal to 0.0554117707689136 times 21 US quarts.

It can also be expressed as: 21 US quarts is equal to $\frac{1}{\mathrm{0.0554117707689136}}$ dry quarts.

Approximation

An approximate numerical result would be: twenty-one US quarts is about eighteen point zero five dry quarts, or alternatively, a dry quart is about zero point zero six times twenty-one US quarts.