Kmh to Mph ConverterRight in Your Browser
Convert kilometers per hour (km/h) to miles per hour (mph). Kilometers per hour (km/h) is the road-speed unit in most countries — speed limits, car dashboards and weather reports. Miles per hour (mph) is the road-speed unit of the US and UK, used for speed limits and wind speeds. Everything is calculated locally in your browser — no server, and it works offline.
0.621371 mph
in miles per hour (mile per hour)
To convert kilometers per hour to miles per hour, multiply the kilometer per hour value by 0.621371.
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| Kilometers per hour (km/h) | Miles per hour (mph) |
|---|---|
| 1 | 0.621371 |
| 2 | 1.24274 |
| 3 | 1.86411 |
| 4 | 2.48548 |
| 5 | 3.10686 |
| 10 | 6.21371 |
| 20 | 12.4274 |
| 50 | 31.0686 |
| 100 | 62.1371 |
Frequently Asked Questions
How many miles per hour are in a kilometer per hour?
One kilometer per hour equals 0.621371 miles per hour (1 km/h = 0.621371 mph). So to go from kilometers per hour to miles per hour, multiply the kilometer per hour value by 0.621371.
What is the formula to convert kilometers per hour to miles per hour?
To convert kilometers per hour to miles per hour, multiply the kilometer per hour value by 0.621371. For example, 10 km/h is 6.21371 mph.
What is 100 kilometers per hour in miles per hour?
100 kilometers per hour — a typical motorway speed limit — is 62.1371 miles per hour. The converter above works for any value, entirely in your browser.
Is the kilometer per hour to mile per hour conversion exact?
The factor used here is the defined value: 1 km/h = 0.6213711922 mph. Results are rounded to six significant digits for readability, so for high-precision work use the full factor.