342 imperial gallons in dry gallons
Conversion
342 imperial gallons is equivalent to 352.963406273136 dry gallons.[1]
Conversion formula
How to convert 342 imperial gallons to dry gallons?
We know (by definition) that:
We can set up a proportion to solve for the number of dry gallons.
Now, we cross multiply to solve for our unknown :
Conclusion:

Conversion in the opposite direction
The inverse of the conversion factor is that 1 dry gallon is equal to 0.00283315488865768 times 342 imperial gallons.
It can also be expressed as: 342 imperial gallons is equal to dry gallons.
Approximation
An approximate numerical result would be: three hundred and forty-two imperial gallons is about three hundred and fifty-two point nine five dry gallons, or alternatively, a dry gallon is about zero times three hundred and forty-two 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.