688 imperial pints in US quarts
Result
The conversion result is: 688 imperial pints is equivalent to 413.12677437367 US quarts.[1]
Conversion formula
How to convert 688 imperial pints to US quarts?
We know (by definition) that: 1 imperialpint ≈ 0.600474962752428 usquart.
We can set up a proportion to solve for the number of US quarts.
1 imperialpint / 688 imperialpint ≈ 0.600474962752428 usquart / x usquart
Now, we cross multiply to solve for our unknown x:
x usquart ≈ (688 imperialpint / 1 imperialpint) * 0.600474962752428 usquart → x usquart ≈ 413.12677437367046 usquart
Conclusion:
688 imperialpint ≈ 413.12677437367046 usquart

Conversion in the opposite direction
The inverse of the conversion factor is that 1 US quart is equal to 0.00242056449020055 times 688 imperial pints.
It can also be expressed as: 688 imperial pints is equal to 1 / 0.00242056449020055 US quarts.
Approximation
An approximate numerical result would be: six hundred and eighty-eight imperial pints is about four hundred and thirteen point one two US quarts, or alternatively, a US quart is about zero times six hundred and eighty-eight imperial pints.
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.