661 knots in feet per second
Conversion
661 knots is equivalent to 1115.64231554389 feet per second.[1]
Conversion in the opposite direction
The inverse of the conversion factor is that 1 foot per second is equal to 0.000896344631309979 times 661 knots.
It can also be expressed as: 661 knots is equal to feet per second.
Approximation
An approximate numerical result would be: six hundred and sixty-one knots is about one thousand, one hundred and fifteen point six four feet per second, or alternatively, a foot per second is about zero times six hundred and sixty-one 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.