71 km/s per megaparsec is an acceleration, not a velocity.
Key this into the Google task bar:
convert 71 km per second to miles per hour
Out pops: In each case this would be the acceleration over a megaparsec (about 3 million light years)
Sounds about right for the Hubble Constant.
5,795 kilometers per second = 12,963,050 miles per hour (rounded)
km/sec x 2,236.94 = mph
(24.1309 / 60) * (km per s) = 899.654766 miles per hour
67,108.09 mph
60 miles = 96.561 kilometers (rounded)
5,795 kilometers per second = 12,963,050 miles per hour (rounded)
km/sec x 2,236.94 = mph
Use this formula - mph x 0.00044704 = km/sec
(24.1309 / 60) * (km per s) = 899.654766 miles per hour
67,108.09 mph
60 miles = 96.561 kilometers (rounded)
41.0 mph To convert kph to mph, multiply by .6214
mph x 1.60934 = km/h
75 mph = 120.7 kph
16 kilometers per second = 35,791 mph
7.5 kilometers per second = 16,777.02 mph
2,000 kilometres is 1242.7 miles. A kilometre is a measure of distance whereas mph is a measure of speed. They measure different things. While you can convert km to miles or kmph to mph, you cannot convert km to mph.