644 imperial cups in US gallons

Conversion formula
How to convert 644 imperial cups to US gallons?

We know (by definition) that: $1\mathrm{brcup}\approx 0.0750593703440534\mathrm{usgallon}$

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

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

Conclusion: 644 ⁢ brcup ≈ 48.33823450157039 ⁢ usgallon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US gallon is equal to 0.0206875573820867 times 644 imperial cups.

It can also be expressed as: 644 imperial cups is equal to $\frac{1}{\mathrm{0.0206875573820867}}$ US gallons.

Approximation

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