Convert Miles Per Hour to Kilometers Per Hour
Use our free online converter to easily convert from Miles Per Hour to Kilometers Per Hour. Get accurate conversions instantly.
Converting Miles Per Hour to Kilometers Per Hour
Converting miles per hour to kilometers per hour is important for drivers and travelers from the United States or United Kingdom when visiting countries that use the metric system, helping them understand speed limits and distances.
Mathematical Relationship
The mathematical relation between miles per hour and kilometers per hour is: 1 mph = 1.60934 km/h. To convert a speed in miles per hour to kilometers per hour, multiply the mph value by 1.60934.
Common Conversion Values
| Miles Per Hour | Kilometers Per Hour |
|---|---|
| 15 | 24.14 |
| 30 | 48.28 |
| 55 | 88.51 |
| 65 | 104.61 |
| 70 | 112.65 |
Unit Definitions
Miles Per Hour
Miles per hour (symbol: mph) is a unit of speed in the imperial and US customary systems, representing the number of miles traveled in one hour. It is used for road speed limits in the United States, the United Kingdom, and a few other countries.
Kilometers Per Hour
Kilometers per hour (symbol: km/h) is a unit of speed in the metric system, representing the number of kilometers traveled in one hour. It is the standard unit for road speed limits in most countries worldwide.
Historical Context
The mile has ancient Roman origins, while the kilometer was introduced during the French Revolution as part of the metric system. The conversion between these speed units became increasingly important with the globalization of travel and transportation.