646 US customary cups in imperial cups

Conversion formula
How to convert 646 US customary cups to imperial cups?

We know (by definition) that: $1\mathrm{uscup}\approx 0.832674184628989\mathrm{brcup}$

We can set up a proportion to solve for the number of imperial cups.

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

Conclusion: 646 ⁢ uscup ≈ 537.9075232703269 ⁢ brcup

Conversion in the opposite direction

The inverse of the conversion factor is that 1 imperial cup is equal to 0.00185905561223662 times 646 US customary cups.

It can also be expressed as: 646 US customary cups is equal to $\frac{1}{\mathrm{0.00185905561223662}}$ imperial cups.

Approximation

An approximate numerical result would be: six hundred and forty-six US customary cups is about five hundred and thirty-seven point nine zero imperial cups, or alternatively, a imperial cup is about zero times six hundred and forty-six US customary cups.