Divide by 1.609344
mph = km/h ÷ 1.609344
Metric to imperial
KM/H to MPH.
Convert kilometers per hour (km/h) to miles per hour (mph) instantly, with a clear result and exact conversion factor.
km/h to mph Exact speed factor Free to use
Speed calculator
Convert your speed.
1 kilometer per hour is about 0.6213712 miles per hour.
The conversion
The km/h-to-mph formula.
Convert kilometers per hour to miles per hour with the international mile factor.
Convert 100 km/h
100 ÷ 1.609344 ≈ 62.1371 mph.
A kilometer per hour
1 km/h is about 0.6213712 mph.
Quick reference
KM/H to MPH chart.
Common speeds and their miles-per-hour equivalents.
| Kilometers per hour | Miles per hour |
|---|---|
| 1 | 0.6213712 |
| 5 | 3.106856 |
| 10 | 6.213712 |
| 50 | 31.06856 |
| 100 | 62.13712 |
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KM/H to MPH, explained
Good to know.
Quick answers about this speed conversion.
How do I convert km/h to mph?
Divide kilometers per hour by 1.609344. For example, 100 km/h is about 62.1371 mph.
How many miles per hour are in one kilometer per hour?
One kilometer per hour is about 0.621371 miles per hour.
Can I enter decimal speeds?
Yes. Enter any non-negative whole or decimal speed.