Convert mile per hour (mph) to kilometer per hour (km/h), or swap the units to reverse the calculation.
Printed from Calxy · https://www.calxy.net/conversion/mph-to-kph
Mile per hour → Kilometer per hour
1.6093 km/h
1 mile per hour = 1.6093 kilometers per hour
1 mile per hour = 1.609344 kilometers per hour (exact definition; display rounded)
Meter per second (m/s)0.447
Kilometer per hour (km/h)1.6093
Mile per hour (mph)1
Foot per second (ft/s)1.4667
Knot (kn)0.869
Mach (sea level) (Ma)0.0013
How to convert mph to kph
Multiply mph by 1.609344 to get km/h. The displayed factor is rounded; the calculator uses the full stored conversion factor.
Both units use hours, so multiply mph by the mile-to-kilometer factor 1.609344. kph and km/h name the same speed unit.
Worked example
60 mph = 96.56064 km/h. To reverse it, enter the unrounded output and select Swap units. Round only the final result; converting an already-rounded result back may not reproduce the original exactly.
Conversion table in both directions
mph and km/h reference values
Input
mph → km/h
km/h → mph
1
1.609344
0.6213711922
2
3.218688
1.2427423845
5
8.04672
3.1068559612
10
16.09344
6.2137119224
20
32.18688
12.4274238447
25
40.2336
15.5342798059
50
80.4672
31.0685596119
100
160.9344
62.1371192237
500
804.672
310.6855961187
1000
1,609.344
621.3711922373
Last updated . Results are estimates for informational purposes only.