Conversion in the opposite direction
The inverse of the conversion factor is that 1 mile per hour is equal to 0.00222222222222222 times 660 feet per second.
It can also be expressed as: 660 feet per second is equal to miles per hour.
An approximate numerical result would be: six hundred and sixty feet per second is about four hundred and fifty miles per hour, or alternatively, a mile per hour is about zero times six hundred and sixty feet per second.
 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.