390 US customary cups in imperial cups

Conversion formula
How to convert 390 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: 390 ⁢ uscup ≈ 324.7429320053057 ⁢ brcup

Conversion in the opposite direction

The inverse of the conversion factor is that 1 imperial cup is equal to 0.00307935878334578 times 390 US customary cups.

It can also be expressed as: 390 US customary cups is equal to $\frac{1}{\mathrm{0.00307935878334578}}$ imperial cups.

Approximation

An approximate numerical result would be: three hundred and ninety US customary cups is about three hundred and twenty-four point seven four imperial cups, or alternatively, a imperial cup is about zero times three hundred and ninety US customary cups.