How to convert 644 US dry pints to US customary cups?
We know (by definition) that:
We can set up a proportion to solve for the number of US customary cups.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 US customary cup is equal to 0.000667210409452875 times 644 US dry pints.
It can also be expressed as: 644 US dry pints is equal to US customary cups.
An approximate numerical result would be: six hundred and forty-four US dry pints is about one thousand, four hundred and ninety-eight point seven seven US customary cups, or alternatively, a US customary cup is about zero times six hundred and forty-four US dry pints.
 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.