Mile per hour to Kilometer per hourConverter
Instantly convert Mile per hour (mph) to Kilometer per hour (km/h). Free, accurate, and easy to use.
How to Convert Mile per hour to Kilometer per hour
To convert Mile per hour (mph) to Kilometer per hour (km/h), multiply your value by 1.60934271.
Example: 5 mph × 1.60934271 = 8.04671356 km/h
What is a Mile per hour?
The mile per hour (mph) is the standard speed unit in the United States, United Kingdom, and a few other territories. Equal to approximately 1.609 km/h or 0.447 m/s, it appears on road signs, vehicle speedometers, and weather reports. US interstate highway speed limits are typically 65–75 mph. A commercial airliner cruises at roughly 550–600 mph (880–965 km/h) at altitude.
What is a Kilometer per hour?
The kilometer per hour (km/h) is the most widely used unit for road vehicle speeds outside the United States. Equal to 1/3.6 meters per second, it is used for speed limits, railway timetables, and meteorological wind speeds in metric countries. Typical urban speed limits are 50 km/h, while highway limits range from 100 to 130 km/h. One km/h equals approximately 0.621 miles per hour.
Mile per hour to Kilometer per hour Conversion Table
| Mile per hour (mph) | Kilometer per hour (km/h) |
|---|---|
| 0.001 mph | 0.00160934 km/h |
| 0.01 mph | 0.01609343 km/h |
| 0.1 mph | 0.16093427 km/h |
| 0.5 mph | 0.80467136 km/h |
| 1 mph | 1.60934271 km/h |
| 2 mph | 3.21868543 km/h |
| 5 mph | 8.04671356 km/h |
| 10 mph | 16.09342713 km/h |
| 20 mph | 32.18685425 km/h |
| 50 mph | 80.46713563 km/h |
| 100 mph | 160.93427125 km/h |
| 200 mph | 321.86854251 km/h |
| 500 mph | 804.67135626 km/h |
| 1000 mph | 1609.34271253 km/h |
| 5000 mph | 8046.71356263 km/h |
| 10000 mph | 16093.42712526 km/h |
| 50000 mph | 80467.13562629 km/h |
| 100000 mph | 160934.27125258 km/h |
| 1000000 mph | 1609342.71252583 km/h |
| 1000000000 mph | 1.6093e+9 km/h |
Frequently Asked Questions
How do I convert Mile per hour to Kilometer per hour?
Multiply the Mile per hour value by 1.60934271. Formula: km/h = mph × 1.60934271. Example: 10 mph = 16.09342713 km/h.
How many Kilometer per hour are in one Mile per hour?
One Mile per hour (mph) equals 1.60934271 Kilometer per hour (km/h).
How many Mile per hour are in one Kilometer per hour?
One Kilometer per hour (km/h) equals 0.62137169 Mile per hour (mph).
What is the exact conversion factor from Mile per hour to Kilometer per hour?
The conversion factor is 1.60934271. Multiply any mph value by this number to get km/h. For the reverse, multiply by 0.62137169.
How do I convert Kilometer per hour back to Mile per hour?
Divide by 1.60934271, or equivalently multiply by 0.62137169. Formula: mph = km/h ÷ 1.60934271.
Is the Mile per hour-to-Kilometer per hour conversion internationally standardized?
Yes. Both units are defined by international standards (SI or the international yard/pound agreement), so the conversion factor 1.60934271 is exact and universally agreed upon.