691 US pints in US quarts
Result
The conversion result is: 691 US pints is equivalent to 345.5 US quarts.[1]
Conversion formula
How to convert 691 US pints to US quarts?
We know (by definition) that: 1 uspint ≈ 0.5 usquart.
We can set up a proportion to solve for the number of US quarts.
1 uspint / 691 uspint ≈ 0.5 usquart / x usquart
Now, we cross multiply to solve for our unknown x:
x usquart ≈ (691 uspint / 1 uspint) * 0.5 usquart → x usquart ≈ 345.5 usquart
Conclusion:
691 uspint ≈ 345.5 usquart

Conversion in the opposite direction
The inverse of the conversion factor is that 1 US quart is equal to 0.00289435600578871 times 691 US pints.
It can also be expressed as: 691 US pints is equal to 1 / 0.00289435600578871 US quarts.
Approximation
An approximate numerical result would be: six hundred and ninety-one US pints is about zero US quarts, or alternatively, a US quart is about zero times six hundred and ninety-one US 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.