Kilometers per hour to Miles per hour Converter
Type a value in kilometers per hour to get it in miles per hour, and see the reverse conversion.
Your numbers
Your results
Converted value
Miles per hour (mph)
—
1 km/h in mph
—
Your number read as mph, in km/h
—
Metres per second (m/s)
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Knots (kn)
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Kilometers per hour to Miles per hour Converter by TheCalcTools
How the Kilometers per hour to Miles per hour Converter works
Divide km/h by 1.609344, or multiply by 0.621371, to get mph.
To convert kilometers per hour to miles per hour, multiply by 0.6213711922. The calculator shows the result to 6 significant figures; the conversion factor itself is exact by definition.
Quick estimate in your head: multiply by 0.6 (or 5/8).
The formula
mph = km/h × 0.6213711922km/h = mph ÷ 0.6213711922
Worked example
Using the default values shown in the calculator:
| Value in kilometers per hour (km/h) | 100 |
|---|
- 100 km/h × 0.6213711922 = 62.1371 mph.
Result:
| Miles per hour (mph) | 62.1371 |
|---|---|
| 1 km/h in mph | 0.621371 |
| Your number read as mph, in km/h | 160.934 |
| Metres per second (m/s) | 27.7778 |
| Knots (kn) | 53.9957 |
Conversion table
| km/h | mph |
|---|---|
| 10 km/h | 6.21371 mph |
| 20 km/h | 12.4274 mph |
| 30 km/h | 18.6411 mph |
| 50 km/h | 31.0686 mph |
| 60 km/h | 37.2823 mph |
| 80 km/h | 49.7097 mph |
| 100 km/h | 62.1371 mph |
| 120 km/h | 74.5645 mph |
| 130 km/h | 80.7783 mph |
| 200 km/h | 124.274 mph |
Frequently asked questions
What is 1 kilometer per hour in miles per hour?
1 kilometer per hour (km/h) equals 0.621371 mph.
Sources and further reading
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This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.