438 miles per hour in kilometers per hour
Result
The conversion result is: 438 miles per hour is equivalent to 704.892672 kilometers per hour.[1]
Conversion in the opposite direction
The inverse of the conversion factor is that 1 kilometer per hour is equal to 0.00141865569003958 times 438 miles per hour.
It can also be expressed as: 438 miles per hour is equal to 1 / 0.00141865569003958 kilometers per hour.
Approximation
An approximate numerical result would be: four hundred and thirty-eight miles per hour is about seven hundred and four point eight eight kilometers per hour, or alternatively, a kilometer per hour is about zero times four hundred and thirty-eight miles 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.