640 US dry barrels in imperial gallons

Conversion formula
How to convert 640 US dry barrels to imperial gallons?

We know (by definition) that: $1\mathrm{drybarrel}\approx 25.4344114577582\mathrm{imperialgallon}$

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: 640 ⁢ drybarrel ≈ 16278.023332965247 ⁢ imperialgallon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 imperial gallon is equal to 6.14325203708771e-05 times 640 US dry barrels.

It can also be expressed as: 640 US dry barrels is equal to $\frac{1}{\mathrm{6.14325203708771e-05}}$ imperial gallons.

Approximation

An approximate numerical result would be: six hundred and forty US dry barrels is about sixteen thousand, two hundred and seventy-eight point zero two imperial gallons, or alternatively, a imperial gallon is about zero times six hundred and forty US dry barrels.