642 US gallons in US quarts
Result
The conversion result is: 642 US gallons is equivalent to 2568 US quarts.[1]
Conversion formula
How to convert 642 US gallons to US quarts?
We know (by definition) that: 1 usgallon ≈ 4 usquart.
We can set up a proportion to solve for the number of US quarts.
1 usgallon / 642 usgallon ≈ 4 usquart / x usquart
Now, we cross multiply to solve for our unknown x:
x usquart ≈ (642 usgallon / 1 usgallon) * 4 usquart → x usquart ≈ 2568 usquart
Conclusion:
642 usgallon ≈ 2568 usquart
Conversion in the opposite direction
The inverse of the conversion factor is that 1 US quart is equal to 0.000389408099688474 times 642 US gallons.
It can also be expressed as: 642 US gallons is equal to 1 / 0.000389408099688474 US quarts.
Approximation
An approximate numerical result would be: six hundred and forty-two US gallons is about two thousand, five hundred and sixty-eight US quarts, or alternatively, a US quart is about zero times six hundred and forty-two US gallons.
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.