Convert kilometers per hour to miles per hour
1 km/h = 0.62137119 mph. Change the amount below, or read the formula and the reference table further down.
1 kilometer per hour equals
miles per hour
1 km/h = 0.62137119 mph
The formula
Kilometers per hour and miles per hour both measure speed from the same zero, so a single multiplier does the job.
mph = km/h × 0.6213711922
Going the other way? Convert miles per hour to kilometers per hour.
Kilometers per hour to miles per hour table
Common values, rounded for reading.
| Kilometers per hour (km/h) | Miles per hour (mph) |
|---|---|
| 1 | 0.621371 |
| 2 | 1.2427 |
| 3 | 1.8641 |
| 4 | 2.4855 |
| 5 | 3.1069 |
| 6 | 3.7282 |
| 7 | 4.3496 |
| 8 | 4.971 |
| 9 | 5.5923 |
| 10 | 6.2137 |
| 15 | 9.3206 |
| 20 | 12.4274 |
| 25 | 15.5343 |
| 30 | 18.6411 |
| 40 | 24.8548 |
| 50 | 31.0686 |
| 75 | 46.6028 |
| 100 | 62.1371 |
| 250 | 155.34 |
| 500 | 310.69 |
| 1,000 | 621.37 |
Questions people ask
- How many miles per hour are in a kilometer per hour?
- One kilometer per hour equals 0.6213711922 miles per hour.
- How do I convert kilometers per hour to miles per hour by hand?
- Multiply the number of kilometers per hour by 0.6213711922. For a rough check, 0.621 is close enough for most everyday use.
- What is 1 kilometer per hour in miles per hour?
- 1 kilometer per hour is 0.62137119 miles per hour.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.