Convert kph to mph

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Kilometre/hour

The kilometre per hour (SI symbol: km/h; abbreviations: kph, kmph, km/hr) is a unit of speed, expressing the number of kilometres travelled in one hour.

Internationally, km/h is the most commonly used unit of speed on traffic signs and road vehicle speedometers. 


Mile/hour

Miles per hour (mph, MPH or mi/h) is a British imperial and United States customary unit of speed expressing the number of statute miles covered in one hour. It is used in the United Kingdom, the United States, and a number of smaller countries, most of which are UK or US territories, or have close historical ties with the UK or US. 


Kilometre/hour to Mile/hour conversion table
Kilometre/hourMile/hourMile/hourKilometre/hour
10.62137111.60934
21.2427423.21869
31.8641134.82803
53.1068658.04672
106.213711016.0934
2012.42742032.1869
2515.53432540.2336
5031.06865080.4672
10062.1371100160.934
250155.343250402.336
500310.686500804.672
1000621.37110001609.34
How to convert Kilometre/hour to Mile/hour

1 km/h = 0.621371 mi/h. To convert any value, multiply it by 0.621371. For example, 25 km/h = 15.5343 mi/h.

Frequently asked questions
How many mi/h are there in one km/h?
One km/h is equal to 0.621371 mi/h.
How do you convert Kilometre/hour to Mile/hour?
Multiply the value in Kilometre/hour by 0.621371 to get the result in Mile/hour.
How much is 25 km/h in mi/h?
25 km/h is equal to 15.5343 mi/h.
How do you convert Mile/hour back to Kilometre/hour?
Divide by the same factor: multiply the value in Mile/hour by 1.60934 to get Kilometre/hour.

Most common speed unit conversions