509 knots in miles per hour
Result
The conversion result is: 509 knots is equivalent to 585.746739043983 miles per hour.[1]
Conversion in the opposite direction
The inverse of the conversion factor is that 1 mile per hour is equal to 0.00170722247917613 times 509 knots.
It can also be expressed as: 509 knots is equal to 1 / 0.00170722247917613 miles per hour.
Approximation
An approximate numerical result would be: five hundred and nine knots is about five hundred and eighty-five point seven five miles per hour, or alternatively, a mile per hour is about zero times five hundred and nine knots.
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.