Convert miles per hour to kilometers per hour
Enter a miles per hour value below and convert to kilometers per hour
mph
1 mile per hour ≈
1.609 kilometers per hour
* rounded result
Select how many decimal places the result will be rounded to:
How to convert miles per hour to kilometers per hour
To convert miles per hour to kilometers per hour, multiply a miles per hour value by 1.609344.
Formula km/h = mph × 1.609344
Example: Convert 100 miles per hour to kilometers per hour Calculations: 100 mph × 1.609344 ≈ 160.934 km/h
Mile per hour (mph)
The mile per hour is the imperial and US customary systems unit of speed, defined as the number of miles traveled in one hour. It is equal to 1.609344 kilometers per hour.
Kilometer per hour (km/h)
The kilometer per hour is a unit of speed in the metric system, defined as the number of kilometers traveled in one hour. It is approximately equal to 0.62137 miles per hour.