21 imperial cups in US quarts

Conversion formula
How to convert 21 imperial cups to US quarts?

We know (by definition) that: $1\mathrm{brcup}\approx 0.300237481376214\mathrm{usquart}$

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 ⁢ brcup ≈ 6.304987108900494 ⁢ usquart

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US quart is equal to 0.158604606595998 times 21 imperial cups.

It can also be expressed as: 21 imperial cups is equal to $\frac{1}{\mathrm{0.158604606595998}}$ US quarts.

Approximation

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