823 feet per second in miles per hour
Conversion
823 feet per second is equivalent to 561.136363636364 miles per hour.[1]
Conversion in the opposite direction
The inverse of the conversion factor is that 1 mile per hour is equal to 0.00178209801539085 times 823 feet per second.
It can also be expressed as: 823 feet per second is equal to miles per hour.
Approximation
An approximate numerical result would be: eight hundred and twenty-three feet per second is about five hundred and sixty-one point one three miles per hour, or alternatively, a mile per hour is about zero times eight hundred and twenty-three feet per second.
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.