How to convert 257 US 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 :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 dry gallon is equal to 0.00452781006282952 times 257 US gallons.
It can also be expressed as: 257 US gallons is equal to dry gallons.
An approximate numerical result would be: two hundred and fifty-seven US gallons is about two hundred and twenty point eight six dry gallons, or alternatively, a dry gallon is about zero times two hundred and fifty-seven US gallons.
 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.