Convert Miles per hour (mph) to Kilometers per hour (km/h)
Enter a value below to convert Miles per hour (mph) to Kilometers per hour (km/h).
Conversion:
1 Miles per hour (mph) = 1.6093439999 Kilometers per hour (km/h)
How to Convert Miles per hour (mph) to Kilometers per hour (km/h)
1 mph = 1.6093439999 kph
1 kph = 0.62137119229 mph
Example: convert 15 Miles per hour (mph) to Kilometers per hour (km/h):
25 mph = 40.233599997 kph
Miles per hour (mph) to Kilometers per hour (km/h) Conversion Table
| Miles per hour (mph) | Kilometers per hour (km/h) |
|---|---|
| 0.01 mph | 0.016093439999 kph |
| 0.1 mph | 0.16093439999 kph |
| 1 mph | 1.6093439999 kph |
| 2 mph | 3.2186879997 kph |
| 3 mph | 4.8280319996 kph |
| 5 mph | 8.0467199994 kph |
| 10 mph | 16.093439999 kph |
| 20 mph | 32.186879997 kph |
| 50 mph | 80.467199994 kph |
| 100 mph | 160.93439999 kph |
| 1000 mph | 1609.3439999 kph |
Miles per hour (mph)
Definition
Miles per hour (mph) is an imperial unit of speed expressing the number of statute miles traveled in one hour. 1 mph ≈ 1.60934 km/h.
History
Miles per hour became the standard speed unit as horse-drawn transport gave way to automobiles in the early 20th century. The United States and United Kingdom adopted mph for their road systems.
Current use
Miles per hour is the official unit for road speed limits and vehicle speedometers in the United States, United Kingdom, and a few other countries. It is also used in baseball (pitch speed) and informal speed references.
Kilometers per hour (km/h)
Definition
Kilometers per hour (km/h or kph) is a metric unit of speed expressing the number of kilometers traveled in one hour. 1 km/h ≈ 0.2778 m/s.
History
Kilometers per hour became widely used in the 20th century as road networks expanded globally. Most countries adopted km/h for speed limits during the metrication movements of the 1960s–1980s.
Current use
Kilometers per hour is the standard unit for road speed limits and vehicle speedometers in most countries worldwide (except the US, UK, and a few others). It is also used in weather reports for wind speed in many nations.