Kilometer per hour to Mile per hour
Convert kilometer per hour to mile per hour with the exact factor, a quick reference table and three worked examples. Everything runs in your browser.
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FromKilometer per hour (km/h)
ToMile per hour (mph)
0.621371mph
mph = km/h × 0.621371Conversion formula
mph = km/h × 0.621371 The conversion factor is 0.621371; multiply directly.
Common conversions
| Kilometer per hour (km/h) | Mile per hour (mph) |
|---|---|
| 1 | 0.621371 |
| 5 | 3.1069 |
| 10 | 6.2137 |
| 20 | 12.4274 |
| 50 | 31.0686 |
| 100 | 62.1371 |
Worked examples
1
1 km/h = 0.621371 mph
2
20 km/h = 12.4274 mph
3
100 km/h = 62.1371 mph
Frequently asked questions
How many mile per hour are in one kilometer per hour?
One kilometer per hour equals 0.621371 mile per hour. Use mph = km/h × 0.621371 for any value.
What is the conversion formula?
The formula is mph = km/h × 0.621371. Here km/h is the input unit and mph is the output unit.
Is the result rounded?
The calculation uses the standard factor 0.621371. Displayed values keep up to six significant digits.
Related conversions
Mile per hour to Kilometer per hour Meter per second to Kilometer per hour Knot to Kilometer per hour
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