Unit Convertio

Trusted unit conversions based on SI and NIST scientific standards

mile/hour to kilometer/second

Convert mile/hour [mph] to kilometer/second [km/s] and vice versa.

Conversion Formula

Example: 1 mph = 0.000447040 km/s

The conversion uses the following relationship: mile/hour values are converted to the base unit (meter/second), then converted to kilometer/second.

Related Speed Conversions

mph to m/skm/s to m/s
mph to km/hkm/s to km/h
mph to m/hkm/s to m/h
mph to m/minkm/s to m/min
mph to km/minkm/s to km/min
mph to cm/hkm/s to cm/h

Quick Reference Table

mphkm/s
10.000447040
50.00223520
100.00447040
250.0111760
500.0223520
1000.0447040
2500.111760
5000.223520
10000.447040
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