# 21 deciliters in US quarts

## Conversion

21 deciliters is equivalent to 2.21904523980845 US quarts.[1]

## 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.

$1 ⁢ dl 21 ⁢ dl ≈ 0.105668820943259 ⁢ usquart x ⁢ usquart$

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

$x\mathrm{usquart}\approx \frac{21\mathrm{dl}}{1\mathrm{dl}}*0.105668820943259\mathrm{usquart}\to x\mathrm{usquart}\approx 2.219045239808439\mathrm{usquart}$

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.

## 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.