556 milliliters in US gallons
Result
The conversion result is: 556 milliliters is equivalent to 0.146879661111131 US gallons.[1]
Conversion formula
How to convert 556 milliliters to US gallons?
We know (by definition) that: 1 ml ≈ 0.000264172052358148 usgallon.
We can set up a proportion to solve for the number of US gallons.
1 ml / 556 ml ≈ 0.000264172052358148 usgallon / x usgallon
Now, we cross multiply to solve for our unknown x:
x usgallon ≈ (556 ml / 1 ml) * 0.000264172052358148 usgallon → x usgallon ≈ 0.1468796611111303 usgallon
Conclusion:
556 ml ≈ 0.1468796611111303 usgallon

Conversion in the opposite direction
The inverse of the conversion factor is that 1 US gallon is equal to 6.80829457553957 times 556 milliliters.
It can also be expressed as: 556 milliliters is equal to 1 / 6.80829457553957 US gallons.
Approximation
An approximate numerical result would be: five hundred and fifty-six milliliters is about zero point one five US gallons, or alternatively, a US gallon is about six point eight zero times five hundred and fifty-six 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.