How to use this tool
- Type a value in miles/hour — it's pre-selected above.
- Read the converted kilometers/hour value instantly, or use the reference table below for common values at a glance.
- Click the ⇄ button to flip the conversion direction.
Miles/hour to Kilometers/hour reference table
| mph | km/h |
|---|---|
| 10 | 16.09344 |
| 20 | 32.18688 |
| 30 | 48.28032 |
| 40 | 64.37376 |
| 55 | 88.51392 |
| 60 | 96.56064 |
| 70 | 112.65408 |
| 100 | 160.9344 |
Frequently asked questions
- How many kilometers/hour in 1 mile/hour?
- 1 mph = 1.609344 km/h.
- How many miles/hour in 1 kilometer/hour?
- 1 km/h = 0.621371 mph.
- Where does converting miles/hour to kilometers/hour actually come up?
- Common for reading a US car's speedometer or a US speed limit sign against km/h, used almost everywhere else.
Every conversion runs locally in your browser — nothing is sent anywhere.