Do you regularly wonder at what speed you are running in miles per hour (mph)? Are you preparing for your next competition in an English-speaking country where miles are used, and you need to convert your speed from kilometers per hour (km/h) to miles per hour (mph)? Discover our kilometer-per-hour to miles-per-hour converter!
If you’re training for that race, our personalized training plans give you your target paces in min/mile or min/km.
The short answer
- km/h to mph: multiply by 0.621 (1 km/h = 0.621 mph).
- mph to km/h: multiply by 1.609 (1 mph = 1.609 km/h).
- Examples: 10 km/h = 6.21 mph · 100 km/h = 62.14 mph · 100 mph = 160.93 km/h.
- For runners: 6 mph = 9.66 km/h, a pace of 10:00 min/mile (6:13 min/km).
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Kilometers per hour to miles per hour converter
Why convert kilometers per hour (km/h) to miles per hour (mph)?
Most countries use the metric system to measure speed, expressed in kilometers per hour (km/h). However, in countries like the United States and the United Kingdom, speed is often indicated in miles per hour (mph).
How to use the km/h to mph converter?
Using the converter is simple. You just need to enter the speed in kilometers per hour that you want to convert, and the system will provide the equivalent in miles per hour, and vice versa.
Formula to convert kilometers per hour to miles per hour & mph to km/h
To convert kilometers per hour (km/h) to miles per hour (mph), you can use the following formula:
Miles per hour = Kilometers per hour × 0.621371
To convert miles per hour (mph) to kilometers per hour (km/h), you can use this formula:
Kilometers per hour = Miles per hour × 1.60934
You just need to multiply the speed in km/h by 0.621371 to get the speed in mph, and multiply the speed in mph by 1.60934 to get the speed in km/h.
Speed conversion table: mph to km/h
This conversion table allows you not only to visualize the equivalences between miles per hour and kilometers per hour but also offers you the flexibility to switch between these two units of speed measurement. Thus, whether you need to convert speeds from miles per hour to kilometers per hour or vice versa, this table will provide the answers easily.
| Kilometers/hour | Miles/hour | Kilometers/hour | Miles/hour |
|---|
km/h to mph and mph to km/h chart for higher speeds
Looking for a driving, cycling or road speed? Here are the most searched equivalents, from 20 to 200.
| Kilometers per hour | Miles per hour |
|---|---|
| 30 km/h | 18.64 mph |
| 50 km/h | 31.07 mph |
| 60 km/h | 37.28 mph |
| 80 km/h | 49.71 mph |
| 90 km/h | 55.92 mph |
| 100 km/h | 62.14 mph |
| 120 km/h | 74.56 mph |
| 130 km/h | 80.78 mph |
| 150 km/h | 93.21 mph |
| 200 km/h | 124.27 mph |
| Miles per hour | Kilometers per hour |
|---|---|
| 20 mph | 32.19 km/h |
| 30 mph | 48.28 km/h |
| 50 mph | 80.47 km/h |
| 60 mph | 96.56 km/h |
| 70 mph | 112.65 km/h |
| 80 mph | 128.75 km/h |
| 100 mph | 160.93 km/h |
| 120 mph | 193.12 km/h |
| 150 mph | 241.40 km/h |
| 200 mph | 321.87 km/h |
From mph to pace per mile and per kilometer
On a treadmill or in a training plan, speed is often given in mph and pace in minutes per mile. If your race or watch uses kilometers, convert it to pace per kilometer: pace (min/km) = 60 ÷ speed in km/h.
Training for a specific race? Our 10K training plan, half marathon training plan and marathon training plan set your paces for every session.
| Speed (mph) | Speed (km/h) | Pace per mile | Pace per km |
|---|---|---|---|
| 5 mph | 8.05 km/h | 12:00 min/mile | 7:27 min/km |
| 5.5 mph | 8.85 km/h | 10:55 min/mile | 6:47 min/km |
| 6 mph | 9.66 km/h | 10:00 min/mile | 6:13 min/km |
| 6.5 mph | 10.46 km/h | 9:14 min/mile | 5:44 min/km |
| 7 mph | 11.27 km/h | 8:34 min/mile | 5:20 min/km |
| 7.5 mph | 12.07 km/h | 8:00 min/mile | 4:58 min/km |
| 8 mph | 12.87 km/h | 7:30 min/mile | 4:40 min/km |
| 8.5 mph | 13.68 km/h | 7:04 min/mile | 4:23 min/km |
| 9 mph | 14.48 km/h | 6:40 min/mile | 4:09 min/km |
| 10 mph | 16.09 km/h | 6:00 min/mile | 3:44 min/km |
To calculate your average speed or pace from a time and a distance, use our average speed and pace calculator.
Want to know your splits on race day? Use our marathon split times calculator.
km/h and mph FAQ
How many mph is 100 km/h?
100 km/h is 62.14 mph. To convert km/h (also written kph) to mph, multiply by 0.621.
How do you convert km/h to mph?
Multiply the speed in km/h by 0.621371 (or divide it by 1.609). For example, 12 km/h × 0.621 = 7.46 mph.
How many kilometers are in a mile?
One mile is 1.609 km (1,609.34 m). To convert distances, use our kilometers to miles converter.
What pace is 6 mph on a treadmill?
6 mph is a pace of 10:00 min/mile, or 6:13 min/km (9.66 km/h). The chart above gives paces from 5 to 10 mph.
Curious what that pace means on race day? Try our race time predictor.
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