Formula: kph x 0.000172603109 = miles per second.
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0.621 is the conversion factor. So, kph x 0.621 = mph
miles... in kph??? Anyway, the speed of light is 300,000 kilometers/second; you can convert that to whatever unit you want. For example, to convert to kilometers/hour, multiply by 3600.
The conversion factor is 3.6. So, meters per second x 3.6 = kph.
One kilometer per hour = 0.621371 miles per hour so: Kph x 0.621371=Mph
100 mph = 160 kph (approx.) The formula to convert miles to km100 mi* 1.609344 km 1 mi = 160.9344 km