21 liters in US quarts

Conversion formula
How to convert 21 liters to US quarts?

We know (by definition) that: $1\mathrm{liter}\approx 1.05668820943259\mathrm{usquart}$

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 ⁢ liter ≈ 22.19045239808439 ⁢ usquart

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US quart is equal to 0.045064426 times 21 liters.

It can also be expressed as: 21 liters is equal to $\frac{1}{\mathrm{0.045064426}}$ US quarts.

Approximation

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