How to convert kilometers per hour to miles per hour
To convert kilometers per hour (km/h) to miles per hour (mph), multiply the value in kilometers per hour by 0.621371192237.
mph = km/h × 0.621371192237
Example: 10 km/h = 6.213711922 mph.
You can also type 10 km/h to mph into the smart calculator, or mix units: 1 km/h + 1 mph.
Kilometers per Hour to Miles per Hour conversion table
| Kilometers per Hour | Miles per Hour |
|---|---|
| 0.01 km/h | 0.0062137119 mph |
| 0.1 km/h | 0.062137119 mph |
| 0.25 km/h | 0.1553428 mph |
| 0.5 km/h | 0.3106856 mph |
| 1 km/h | 0.62137119 mph |
| 2 km/h | 1.2427424 mph |
| 3 km/h | 1.8641136 mph |
| 4 km/h | 2.4854848 mph |
| 5 km/h | 3.106856 mph |
| 6 km/h | 3.7282272 mph |
| 7 km/h | 4.3495983 mph |
| 8 km/h | 4.9709695 mph |
| 9 km/h | 5.5923407 mph |
| 10 km/h | 6.2137119 mph |
| 12 km/h | 7.4564543 mph |
| 15 km/h | 9.3205679 mph |
| 20 km/h | 12.427424 mph |
| 25 km/h | 15.53428 mph |
| 30 km/h | 18.641136 mph |
| 40 km/h | 24.854848 mph |
| 50 km/h | 31.06856 mph |
| 60 km/h | 37.282272 mph |
| 75 km/h | 46.602839 mph |
| 100 km/h | 62.137119 mph |
| 250 km/h | 155.3428 mph |
| 500 km/h | 310.6856 mph |
| 1,000 km/h | 621.37119 mph |
Converting miles per hour back to kilometers per hour
1 mph = 1.609344 km/h. See the Miles per Hour to Kilometers per Hour converter, or press the swap button above.
About the units
Kilometer per hour (km/h)
The road speed unit in most of the world.
Mile per hour (mph)
Exactly 0.44704 meters per second, the road speed unit in the US and UK.
Speed is distance travelled per unit of time. The SI unit is the meter per second. Road speeds use km/h or mph, and a knot is one nautical mile per hour.
Questions and answers
How many miles per hour are in a kilometer per hour?
One kilometer per hour (km/h) equals 0.6213711922 miles per hour (mph).
How do I convert kilometers per hour to miles per hour?
To convert kilometers per hour to miles per hour, multiply the value in kilometers per hour by 0.621371192237. The formula is mph = km/h × 0.621371192237. For example, 10 km/h = 6.2137119 mph.
What is 10 km/h in mph?
10 kilometers per hour is 6.213711922 miles per hour.
Which is bigger, a kilometer per hour or a mile per hour?
A mile per hour is bigger: 1 mph = 1.609344 km/h.
What is a knot?
A knot is one nautical mile per hour: exactly 1.852 km/h, or about 1.151 mph.
Does this km/h to mph converter work offline?
Yes. ConvertEasy is a progressive web app: after your first visit it keeps working with no connection, and you can install it to your home screen from the browser menu.