18 US quarts in dry quarts
Result
The conversion result is: 18 US quarts is equivalent to 15.4686061327555 dry quarts.[1]
Conversion formula
How to convert 18 US quarts to dry quarts?
We know (by definition) that: 1 usquart ≈ 0.859367007375303 dryquart.
We can set up a proportion to solve for the number of dry quarts.
1 usquart / 18 usquart ≈ 0.859367007375303 dryquart / x dryquart
Now, we cross multiply to solve for our unknown x:
x dryquart ≈ (18 usquart / 1 usquart) * 0.859367007375303 dryquart → x dryquart ≈ 15.468606132755454 dryquart
Conclusion:
18 usquart ≈ 15.468606132755454 dryquart

Conversion in the opposite direction
The inverse of the conversion factor is that 1 dry quart is equal to 0.0646470658970659 times 18 US quarts.
It can also be expressed as: 18 US quarts is equal to 1 / 0.0646470658970659 dry quarts.
Approximation
An approximate numerical result would be: eighteen US quarts is about fifteen point four seven dry quarts, or alternatively, a dry quart is about zero point zero six times eighteen US quarts.
Footnotes
[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).
Results may contain small errors due to the use of floating point arithmetic.