Miles per hour to kilometers per hour
For US and UK speed limits, wind speeds and car specs given in miles per hour.
1 mile per hour = 1.609344 kilometers per hour
Formula: kilometers per hour = miles per hour × 1.609344
How to convert
How to convert miles per hour to kilometers per hour
One mile per hour is 1.609344 kilometers per hour. To convert, use this formula:
kilometers per hour = miles per hour × 1.609344
Example: 45 miles per hour = 72.42048 kilometers per hour.
Miles per hour to kilometers per hour table
| miles per hour (mph) | kilometers per hour (km/h) |
|---|---|
| 5 mph | 8.04672 km/h |
| 10 mph | 16.0934 km/h |
| 15 mph | 24.1402 km/h |
| 20 mph | 32.1869 km/h |
| 25 mph | 40.2336 km/h |
| 30 mph | 48.2803 km/h |
| 35 mph | 56.327 km/h |
| 40 mph | 64.3738 km/h |
| 45 mph | 72.4205 km/h |
| 50 mph | 80.4672 km/h |
| 55 mph | 88.5139 km/h |
| 60 mph | 96.5606 km/h |
| 65 mph | 104.607 km/h |
| 70 mph | 112.654 km/h |
| 75 mph | 120.701 km/h |
| 80 mph | 128.748 km/h |
| 100 mph | 160.934 km/h |
About the units
- Miles per hour is used for road speeds in the United States and the United Kingdom.
- Kilometers per hour is the unit for speed limits and car speedometers in most of the world.
Convert kilometers per hour to miles per hour · All speed conversions
Related
More speed conversions
Kilometers per hour to miles per hourFor speed limits and car speeds when driving abroad, and for cycling and running paces.
Frequently asked questions
How many kilometers per hour are in a mile per hour?
One mile per hour equals 1.609344 kilometers per hour.
How do I convert miles per hour to kilometers per hour?
Use the formula kilometers per hour = miles per hour × 1.609344. For example, 45 miles per hour is 72.42048 kilometers per hour.
What is 45 miles per hour in kilometers per hour?
45 miles per hour is 72.42048 kilometers per hour.
How do I convert kilometers per hour back to miles per hour?
Use the formula miles per hour = kilometers per hour ÷ 1.609344. One kilometer per hour is 0.6213711922 miles per hour.