664 imperial gallons in dry gallons
Result
The conversion result is: 664 imperial gallons is equivalent to 685.285677676497 dry gallons.[1]
Conversion formula
How to convert 664 imperial gallons to dry gallons?
We know (by definition) that: 1 imperialgallon ≈ 1.0320567434887 drygallon.
We can set up a proportion to solve for the number of dry gallons.
1 imperialgallon / 664 imperialgallon ≈ 1.0320567434887 drygallon / x drygallon
Now, we cross multiply to solve for our unknown x:
x drygallon ≈ (664 imperialgallon / 1 imperialgallon) * 1.0320567434887 drygallon → x drygallon ≈ 685.2856776764968 drygallon
Conclusion:
664 imperialgallon ≈ 685.2856776764968 drygallon
Conversion in the opposite direction
The inverse of the conversion factor is that 1 dry gallon is equal to 0.00145924543963995 times 664 imperial gallons.
It can also be expressed as: 664 imperial gallons is equal to 1 / 0.00145924543963995 dry gallons.
Approximation
An approximate numerical result would be: six hundred and sixty-four imperial gallons is about six hundred and eighty-five point two eight dry gallons, or alternatively, a dry gallon is about zero times six hundred and sixty-four imperial gallons.
Footnotes
[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).
Results may contain small errors due to the use of floating point arithmetic.