691 centiliters in US customary cups
Result
The conversion result is: 691 centiliters is equivalent to 29.2068621087169 US customary cups.[1]
Conversion formula
How to convert 691 centiliters to US customary cups?
We know (by definition) that: 1 centiliter ≈ 0.0422675283773037 uscup.
We can set up a proportion to solve for the number of US customary cups.
1 centiliter / 691 centiliter ≈ 0.0422675283773037 uscup / x uscup
Now, we cross multiply to solve for our unknown x:
x uscup ≈ (691 centiliter / 1 centiliter) * 0.0422675283773037 uscup → x uscup ≈ 29.20686210871686 uscup
Conclusion:
691 centiliter ≈ 29.20686210871686 uscup

Conversion in the opposite direction
The inverse of the conversion factor is that 1 US customary cup is equal to 0.0342385291606368 times 691 centiliters.
It can also be expressed as: 691 centiliters is equal to 1 / 0.0342385291606368 US customary cups.
Approximation
An approximate numerical result would be: six hundred and ninety-one centiliters is about twenty-nine point two one US customary cups, or alternatively, a US customary cup is about zero point zero three times six hundred and ninety-one centiliters.
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.