Kilometers per hour to Miles per hour – kilometer per hour to mile per hour Converter
1 km/h ≈ 0.621371 mph
Formula
mph = km/h × ≈ 0.621371
Kilometers per hour to miles per hour conversion table
| kilometers per hour (km/h) | miles per hour (mph) |
|---|---|
| 0.5 km/h | 0.310686 mph |
| 1 km/h | ≈ 0.621371 mph |
| 2 km/h | 1.24274 mph |
| 3 km/h | 1.86411 mph |
| 5 km/h | 3.10686 mph |
| 10 km/h | 6.21371 mph |
| 20 km/h | 12.4274 mph |
| 25 km/h | 15.5343 mph |
| 50 km/h | 31.0686 mph |
| 75 km/h | 46.6028 mph |
| 100 km/h | 62.1371 mph |
| 250 km/h | 155.343 mph |
| 500 km/h | 310.686 mph |
| 1000 km/h | 621.371 mph |
| 5000 km/h | 3106.86 mph |
Kilometers per hour and miles per hour are both speed units. One kilometer per hour is approximately 0.621371 miles per hour; enter any value above for an instant result, or use the table for common conversions.
Sanity-check examples
1 km/h = 0.621371 mph10 km/h = 6.21371 mph100 km/h = 62.1371 mph
Common pitfalls and look-alike units
A knot is one nautical mile per hour (1 kn ≈ 1.852 km/h) — not a land mile. Wind speeds in m/s and km/h are also easy to mix up: typhoon reports usually quote m/s.
Frequently asked questions
How many miles per hour are in a kilometer per hour?
1 kilometer per hour (km/h) is approximately 0.621371 mile per hour (mph).
How do I convert kilometers per hour to miles per hour?
Multiply the kilometer per hour value by ≈ 0.621371 to get mile per hour — for example, 2 kilometers per hour = 1.24274 mile per hour.
How do I convert miles per hour back to kilometers per hour?
1 mile per hour equals 1.609344 kilometer per hour. Use the swap button or the reverse conversion page linked on this page.