291 milliliters in US quarts
Result
The conversion result is: 291 milliliters is equivalent to 0.307496268944885 US quarts.[1]
Conversion formula
How to convert 291 milliliters to US quarts?
We know (by definition) that: 1 ml ≈ 0.00105668820943259 usquart.
We can set up a proportion to solve for the number of US quarts.
1 ml / 291 ml ≈ 0.00105668820943259 usquart / x usquart
Now, we cross multiply to solve for our unknown x:
x usquart ≈ (291 ml / 1 ml) * 0.00105668820943259 usquart → x usquart ≈ 0.3074962689448837 usquart
Conclusion:
291 ml ≈ 0.3074962689448837 usquart

Conversion in the opposite direction
The inverse of the conversion factor is that 1 US quart is equal to 3.25207197938144 times 291 milliliters.
It can also be expressed as: 291 milliliters is equal to 1 / 3.25207197938144 US quarts.
Approximation
An approximate numerical result would be: two hundred and ninety-one milliliters is about zero point three one US quarts, or alternatively, a US quart is about three point two five times two hundred and ninety-one milliliters.
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.