665 knots in feet per second
Conversion
665 knots is equivalent to 1122.3935549723 feet per second.[1]
Conversion in the opposite direction
The inverse of the conversion factor is that 1 foot per second is equal to 0.000890953084655483 times 665 knots.
It can also be expressed as: 665 knots is equal to feet per second.
Approximation
An approximate numerical result would be: six hundred and sixty-five knots is about one thousand, one hundred and twenty-two point three nine feet per second, or alternatively, a foot per second is about zero times six hundred and sixty-five 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.