300 milliliters in US quarts
Result
The conversion result is: 300 milliliters is equivalent to 0.317006462829778 US quarts.[1]
Conversion formula
How to convert 300 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 / 300 ml ≈ 0.00105668820943259 usquart / x usquart
Now, we cross multiply to solve for our unknown x:
x usquart ≈ (300 ml / 1 ml) * 0.00105668820943259 usquart → x usquart ≈ 0.317006462829777 usquart
Conclusion:
300 ml ≈ 0.317006462829777 usquart

Conversion in the opposite direction
The inverse of the conversion factor is that 1 US quart is equal to 3.15450982 times 300 milliliters.
It can also be expressed as: 300 milliliters is equal to 1 / 3.15450982 US quarts.
Approximation
An approximate numerical result would be: three hundred milliliters is about zero point three two US quarts, or alternatively, a US quart is about three point one four times three hundred 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.