100 km/h = 62.13712 mph

The same value in every unit

UnitSymbolValue
Meter per secondm/s27.77778
Millimeter per secondmm/s27 777.78
Kilometer per hourkm/h100
Mile per hourmph62.13712
Foot per secondft/s91.13444
Inch per secondin/s1 093.613
Foot per minuteft/min5 468.066
Knotkn53.99568

Calculator by Engineer Underground · open the full page for the worked example and theory