How to convert kilometers per hour to miles per hour
Multiply the number of kilometers per hour by 0.621371. That is all there is to it, because the factor between kilometers per hour and miles per hour never changes.
Example: 100 kilometers per hour × 0.621371 = 62.1371 miles per hour.
km/h to mph chart
| Kilometers per hour (km/h) | Miles per hour (mph) |
|---|---|
| 5 km/h | 3.1069 mph |
| 10 km/h | 6.2137 mph |
| 20 km/h | 12.4274 mph |
| 30 km/h | 18.6411 mph |
| 40 km/h | 24.8548 mph |
| 50 km/h | 31.0686 mph |
| 60 km/h | 37.2823 mph |
| 70 km/h | 43.496 mph |
| 80 km/h | 49.7097 mph |
| 90 km/h | 55.9234 mph |
| 100 km/h | 62.1371 mph |
| 110 km/h | 68.3508 mph |
| 120 km/h | 74.5645 mph |
| 130 km/h | 80.7783 mph |
| 140 km/h | 86.992 mph |
| 150 km/h | 93.2057 mph |
| 160 km/h | 99.4194 mph |
| 200 km/h | 124.2742 mph |
| 250 km/h | 155.3428 mph |
| 300 km/h | 186.4114 mph |
Values are rounded to at most four decimals. The converter above shows more digits.
About the units
One kilometer per hour is 0.2777777778 meters per second.
One mile per hour is 0.44704 meters per second.
Need the other direction? Use the mph to km/h converter. For every speed unit at once, open the Speed Converter.
Frequently asked questions
How many miles per hour are in a kilometer per hour?
There are 0.621371 miles per hour in one kilometer per hour.
How do I convert kilometers per hour to miles per hour?
Multiply the number of kilometers per hour by 0.621371. For example: 100 kilometers per hour × 0.621371 = 62.1371 miles per hour.
What is 120 kilometers per hour in miles per hour?
120 kilometers per hour equals 74.5645 miles per hour.