665 kilometers per hour in feet per second
Conversion
665 kilometers per hour is equivalent to 606.044036162146 feet per second.[1]
Conversion in the opposite direction
The inverse of the conversion factor is that 1 foot per second is equal to 0.00165004511278195 times 665 kilometers per hour.
It can also be expressed as: 665 kilometers per hour is equal to feet per second.
Approximation
An approximate numerical result would be: six hundred and sixty-five kilometers per hour is about six hundred and six point zero three feet per second, or alternatively, a foot per second is about zero times six hundred and sixty-five kilometers per hour.
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.