509 deciliters in liters
Result
The conversion result is: 509 deciliters is equivalent to 50.9 liters.[1]
Conversion formula
How to convert 509 deciliters to liters?
We know (by definition) that: 1 dl ≈ 0.1 liter.
We can set up a proportion to solve for the number of liters.
1 dl / 509 dl ≈ 0.1 liter / x liter
Now, we cross multiply to solve for our unknown x:
x liter ≈ (509 dl / 1 dl) * 0.1 liter → x liter ≈ 50.900000000000006 liter
Conclusion:
509 dl ≈ 50.900000000000006 liter

Conversion in the opposite direction
The inverse of the conversion factor is that 1 liter is equal to 0.0196463654223969 times 509 deciliters.
It can also be expressed as: 509 deciliters is equal to 1 / 0.0196463654223969 liters.
Approximation
An approximate numerical result would be: five hundred and nine deciliters is about zero liters, or alternatively, a liter is about zero point zero two times five hundred and nine deciliters.
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.