km/h to mph Converter
Conversion formula
1 km/h = 0.621371 mph
Speed limits and car speedometers use kilometers per hour in most countries, while the US and UK use miles per hour. Travelers renting a car abroad and car buyers comparing specifications both need this conversion.
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km/h
miles per hour
62.1371 mph
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How to convert kilometers per hour to miles per hour
- 1
1 kilometer per hour = 0.621371 miles per hour, so multiply by 0.621371.
- 2
Example: 100 × 0.621371 = 62.1371 mph.
km/h to mph conversion chart
| km/h | 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 |
| 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 |
| 150 km/h | 93.2057 mph |
| 200 km/h | 124.2742 mph |
| 300 km/h | 186.4114 mph |
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Frequently asked questions
How do I convert kilometers per hour to miles per hour?
1 kilometer per hour = 0.621371 miles per hour, so multiply by 0.621371. For example, 100 km/h = 62.1371 mph.
How many miles per hour are in one kilometer per hour?
One kilometer per hour equals 0.621371 miles per hour.
Is the mph to km/h conversion exact?
Yes. A mile is exactly 1.609344 km, so 1 mph is exactly 1.609344 km/h. Results are rounded only for display.