646 US customary cups in imperial gallons

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

We know (by definition) that: $1\mathrm{uscup}\approx 0.0520421365393118\mathrm{imperialgallon}$

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

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

Conclusion: 646 ⁢ uscup ≈ 33.619220204395425 ⁢ imperialgallon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 imperial gallon is equal to 0.0297448897957859 times 646 US customary cups.

It can also be expressed as: 646 US customary cups is equal to $\frac{1}{\mathrm{0.0297448897957859}}$ imperial gallons.

Approximation

An approximate numerical result would be: six hundred and forty-six US customary cups is about thirty-three point six one imperial gallons, or alternatively, a imperial gallon is about zero point zero three times six hundred and forty-six US customary cups.