Convert miles per hour to kilometers per hour instantly. 100 mph = 160.9344 km/h.
1 mph = 1.609344 km/h
To convert miles per hour to kilometers per hour, use the formula km/h = mph × 1.609344. In other words, multiply the number of miles per hour by 1.609344 to get the equivalent in kilometers per hour. For example, 100 mph equals 160.9344 km/h.
| MPH (mph) | KM/H (km/h) |
|---|---|
| 1 mph | 1.609344 km/h |
| 5 mph | 8.04672 km/h |
| 10 mph | 16.09344 km/h |
| 15 mph | 24.14016 km/h |
| 20 mph | 32.18688 km/h |
| 25 mph | 40.2336 km/h |
| 30 mph | 48.28032 km/h |
| 40 mph | 64.37376 km/h |
| 50 mph | 80.4672 km/h |
| 60 mph | 96.56064 km/h |
| 70 mph | 112.6541 km/h |
| 80 mph | 128.7475 km/h |
| 90 mph | 144.841 km/h |
| 100 mph | 160.9344 km/h |
| 110 mph | 177.0278 km/h |
| 120 mph | 193.1213 km/h |
| 130 mph | 209.2147 km/h |
| 150 mph | 241.4016 km/h |
| 200 mph | 321.8688 km/h |
| 300 mph | 482.8032 km/h |
The mile per hour (mph) and the kilometer per hour (km/h) are both units of speed. This page gives you an instant, exact conversion between them, a reference table for the most common values, and the underlying formula so you can check the maths yourself. All calculations run in your browser — nothing you type is sent anywhere.
Need to go the other way? Use the KM/H to MPH converter. For all units at once, try the full Speed Converter.
Use the formula km/h = mph × 1.609344. For example, 100 mph equals 160.9344 km/h. Just enter your value in the converter above to get an instant result.
1 mph = 1.609344 km/h. You can multiply any number of miles per hour by this figure to convert it, or use the calculator above for exact results.
Use the reverse conversion: 1 km/h = 0.6213712 mph. Our KM/H to MPH converter does this for you.