21 milliliters in US quarts

Result

The conversion result is: 21 milliliters is equivalent to 0.0221904523980845 US quarts.^[1]

Conversion formula
How to convert 21 milliliters to US quarts?

We know (by definition) that: 1 ml ≈ 0.00105668820943259 usquart.

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

1 ml / 21 ml ≈ 0.00105668820943259 usquart / x usquart

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

x usquart ≈ (21 ml / 1 ml) * 0.00105668820943259 usquart → x usquart ≈ 0.02219045239808439 usquart

Conclusion:

21 ml ≈ 0.02219045239808439 usquart

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US quart is equal to 45.064426 times 21 milliliters.

It can also be expressed as: 21 milliliters is equal to 1 / 45.064426 US quarts.

Approximation

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