You can't convert between units that measure completely different things. If this is a speed problem, as is most likely, you have to decide how fast you will travel, then use the formula:
distance = speed x time
439 miles is 2,317,900 feet.
probably 9 and a 1/2 hours
439 minutes is 7 hours and 19 minutes.
439 knots=505.192178 miles per hour
439 minutes. about a mile per minute, so 4 hours and 39 minutes.
439 miles
It is 439 miles according to Google Maps.
Assuming you're on the West Coast, that's 439 miles down I-5.
It is 439 miles according to Google Maps.
Since a day has 24 hours, you multiply the number of days by 24.
about 420 miles to drive
439 miles by taking I-10 E