Convert miles per hour to kilometers per hour

1 mph = 1.609344 km/h. Change the amount below, or read the formula and the reference table further down.

1 mile per hour equals

1.609344kilometers per hour

1 mph = 1.609344 km/h

The formula

Miles per hour and kilometers per hour both measure speed from the same zero, so a single multiplier does the job.

km/h = mph × 1.609344

Going the other way? Convert kilometers per hour to miles per hour.

Miles per hour to kilometers per hour table

Common values, rounded for reading.

Miles per hour (mph)Kilometers per hour (km/h)
11.6093
23.2187
34.828
46.4374
58.0467
69.6561
711.2654
812.8748
914.4841
1016.0934
1524.1402
2032.1869
2540.2336
3048.2803
4064.3738
5080.4672
75120.7
100160.93
250402.34
500804.67
1,0001,609.34

Questions people ask

How many kilometers per hour are in a mile per hour?
One mile per hour equals 1.609344 kilometers per hour.
How do I convert miles per hour to kilometers per hour by hand?
Multiply the number of miles per hour by 1.609344. For a rough check, 1.6 is close enough for most everyday use.
What is 1 mile per hour in kilometers per hour?
1 mile per hour is 1.609344 kilometers per hour.

Calcuit generates this page from a unit table, so the factors here match every other page on the site.

Cookies on Calcuit
We use essential cookies to remember this choice and, if you sign in, to keep you signed in. Advertising cookies from Google AdSense are optional. They are not set, and the AdSense script is not loaded, unless you accept.