Convert km/h to mph
1 kilometer per hour equals 0.621371 miles per hour. To convert kilometers per hour to miles per hour, multiply the number of kilometers per hour by 0.621371: for example, 10 km/h is 6.21371 mph. Ethical Tube's free km/h to mph converter does the math as you type, and the chart below lists common values.
1 km/h = 0.621371 mph
- 1 km/h
- 0.621371 mph
- 1 mph
- 1.60934 km/h
- Formula
- mph = km/h × 0.621371
- Measures
- Speed
- Price
- Free
- Works offline
- Yes
Conversion chart
km/h to mph chart
| Kilometers per hour (km/h) | Miles per hour (mph) |
|---|---|
| 1 km/h | 0.621371 mph |
| 2 km/h | 1.24274 mph |
| 3 km/h | 1.86411 mph |
| 4 km/h | 2.48548 mph |
| 5 km/h | 3.10686 mph |
| 6 km/h | 3.72823 mph |
| 8 km/h | 4.97097 mph |
| 10 km/h | 6.21371 mph |
| 12 km/h | 7.45645 mph |
| 15 km/h | 9.32057 mph |
| 20 km/h | 12.4274 mph |
| 25 km/h | 15.5343 mph |
| 50 km/h | 31.0686 mph |
| 100 km/h | 62.1371 mph |
How it works
How to convert km/h to mph
Know the formula
mph = km/h × 0.621371. In words: multiply the number of kilometers per hour by 0.621371.
Work an example
10 km/h → 6.21371 mph. Round to two or three decimal places for everyday use.
Or type it in
Enter any value in the converter above and the answer appears instantly, in both directions.
Good to know
About speed units
- One mile per hour is exactly 1.609344 kilometers per hour.
- A knot is one nautical mile (1,852 meters) per hour. Ships and aircraft use it.
FAQ
Questions, answered
How many miles per hour are in a kilometer per hour?
There are 0.621371 miles per hour in 1 kilometer per hour. To convert kilometers per hour to miles per hour, multiply the number of kilometers per hour by 0.621371.
What is 10 km/h in mph?
10 kilometers per hour is 6.21371 miles per hour.
How do you convert mph back to km/h?
Multiply the number of miles per hour by 1.60934. 1 mile per hour is 1.60934 kilometers per hour.
Is this km/h to mph converter free?
Yes. It's free and works in any browser, even offline once the page has loaded. The answer updates as you type, and nothing you enter is sent anywhere.
Keep converting
Related converters
Start your first recording in seconds
It's free, it runs in your browser, and there's no account to create.
Start recording for free