221 knots in feet per second
Result
The conversion result is: 221 knots is equivalent to 373.005978419364 feet per second.[1]
Conversion in the opposite direction
The inverse of the conversion factor is that 1 foot per second is equal to 0.00268092217780949 times 221 knots.
It can also be expressed as: 221 knots is equal to 1 / 0.00268092217780949 feet per second.
Approximation
An approximate numerical result would be: two hundred and twenty-one knots is about three hundred and seventy-three point zero zero feet per second, or alternatively, a foot per second is about zero times two hundred and twenty-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.