MPH to KM/H Converter
Convert miles per hour (mph) to kilometers per hour (km/h) instantly. Type a value — the result updates as you type, and the swap button converts the other way.
mph to km/h formula
km/h = mph × 1.609344
1 mile per hour = 1.61 kilometers per hour · 1 kilometer per hour = 0.6214 miles per hour
To convert miles per hour to kilometers per hour, multiply the value by 1.609344. For example, 60 mph:
km/h = 60 × 1.609344km/h = 96.56064
So 60 mph = 96.56 km/h.
Mental math shortcut
Quick mental estimate: multiply by 1.6. For 60 mph that gives about 96 km/h — within 1% of the exact answer. Use the exact formula when precision matters.
mph to km/h conversion table
km/h back to mph
The same values converted the other way, rounded for everyday use:
| Kilometers per hour | Miles per hour |
|---|---|
| 16.09 km/h | 10 mph |
| 32.19 km/h | 20 mph |
| 40.23 km/h | 25 mph |
| 48.28 km/h | 30 mph |
| 64.37 km/h | 40 mph |
| 80.47 km/h | 50 mph |
| 88.51 km/h | 55 mph |
| 96.56 km/h | 60 mph |
About the units
Miles per hour (mph)
Miles per hour is the speed unit used on roads in the US and UK.
Kilometers per hour (km/h)
Kilometers per hour is the road-speed unit used in most of the world. 100 km/h ≈ 62 mph.
Frequently asked questions
How many kilometers per hour are in a mile per hour?
One mile per hour equals 1.61 kilometers per hour.
What is 60 mph in km/h?
60 mph = 96.56 km/h.
How do I convert km/h back to mph?
Divide the kilometers per hour by 1.609344. Or use the KM/H to MPH converter.