638 dry gallons in imperial gallons

Conversion formula
How to convert 638 dry gallons to imperial gallons?

We know (by definition) that: $1\mathrm{drygallon}\approx 0.968938971920925\mathrm{imperialgallon}$

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: 638 ⁢ drygallon ≈ 618.1830640855502 ⁢ imperialgallon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 imperial gallon is equal to 0.00161764379857163 times 638 dry gallons.

It can also be expressed as: 638 dry gallons is equal to $\frac{1}{\mathrm{0.00161764379857163}}$ imperial gallons.

Approximation

An approximate numerical result would be: six hundred and thirty-eight dry gallons is about six hundred and eighteen point one seven imperial gallons, or alternatively, a imperial gallon is about zero times six hundred and thirty-eight dry gallons.