21 deciliters in US quarts

Conversion formula
How to convert 21 deciliters to US quarts?

We know (by definition) that: $1\mathrm{dl}\approx 0.105668820943259\mathrm{usquart}$

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

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

Conclusion: 21 ⁢ dl ≈ 2.219045239808439 ⁢ usquart

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US quart is equal to 0.45064426 times 21 deciliters.

It can also be expressed as: 21 deciliters is equal to $\frac{1}{\mathrm{0.45064426}}$ US quarts.

Approximation

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