Miles per Hour to Kilometers per Hour
Convert miles per hour to kilometers per hour for speed limits, driving, road signs, vehicle dashboards, and travel planning.
How to convert mph to km/h
To convert a value from miles per hour (mph) to kilometers per hour (km/h), enter the number in the converter above. Use the swap control if you need the reverse direction.
x is the source value in mph; y is the result in km/h.
Popular conversions
Quick answers for common mph to km/h values are available from the related conversion pages.
Use the related tools section for fixed-value conversions and the reverse direction.
Common conversion table
Quick reference table for common mph to km/h values:
| mph | km/h |
|---|---|
| 1 | 1.609344 |
| 5 | 8.04672 |
| 10 | 16.09344 |
| 50 | 80.4672 |
| 100 | 160.9344 |
| 1,000 | 1,609.344 |
About miles per hour
Mile per hour (mph) — One mile per hour equals exactly 0.44704 meters per second, because one international mile is 1,609.344 meters.
Common uses: Miles per hour are used for speed limits, driving, road signs, vehicle dashboards, and travel planning in the United States and the United Kingdom.
About kilometers per hour
Kilometer per hour (km/h) — One kilometer per hour equals exactly 1,000 meters per 3,600 seconds, or 0.2777777778 meters per second.
Common uses: Kilometers per hour are used for road speed limits, vehicle dashboards, cycling, running, weather, transport, and travel planning in most countries.
Frequently Asked Questions
Related Tools
Convert kilometers per hour to miles per hour for speed limits, driving, road signs, vehicle dashboards, and travel planning.
Convert kilometers per hour to meters per second for physics, engineering, vehicle speed, sports, and formula checks.
Convert meters per second to kilometers per hour for physics, engineering, vehicle speed, sports, and formula checks.