Miles per Hour to Kilometers per Second Converter
Convert miles per hour (mph) to kilometers per second (km/s)
Result
0.00044704 km/s
Kilometers per Second
1 mph = 0.00044704 km/s
1 mph in other units
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How to convert miles per hour to kilometers per second
One mile per hour equals 0.00044704 kilometers per second, so multiply the number of miles per hour by 0.00044704.
km/s = mph × 0.00044704
1 mph = 0.00044704 km/s · 1 km/s = 2,236.936 mph
Worked example
To convert 5 miles per hour to kilometers per second: 5 mph × 0.00044704 = 0.0022352 km/s.
About miles per hour (mph)
Miles per hour is used for road speeds in the US and UK. One mph is exactly 1.609344 km/h.
About kilometers per second (km/s)
Kilometres per second is used for very high speeds, such as satellites and planets.
More conversions
Miles per Hour to other units
Frequently asked questions
How many kilometers per second are in one mile per hour?
One mile per hour equals 0.00044704 kilometers per second.
How many miles per hour are in one kilometer per second?
One kilometer per second equals 2,236.936 miles per hour.
How do I convert miles per hour to kilometers per second?
Use the formula km/s = mph × 0.00044704. For example, 5 mph × 0.00044704 = 0.0022352 km/s.