1 mph = 1.60934 km/h
One mile per hour equals approximately 1.609 kilometers per hour.
Conversion Formula
km/h = mph x 1.60934
Quick Converter
Miles per Hour to Kilometers per Hour Reference Table
| Miles per Hour (mph) | Kilometers per Hour (km/h) |
|---|---|
| 0.1 mph | 0.160934 km/h |
| 0.5 mph | 0.80467 km/h |
| 1 mph | 1.60934 km/h |
| 2 mph | 3.21868 km/h |
| 3 mph | 4.82802 km/h |
| 5 mph | 8.0467 km/h |
| 10 mph | 16.0934 km/h |
| 15 mph | 24.1401 km/h |
| 20 mph | 32.1868 km/h |
| 25 mph | 40.2335 km/h |
| 50 mph | 80.467 km/h |
| 75 mph | 120.7005 km/h |
| 100 mph | 160.934 km/h |
| 150 mph | 241.401 km/h |
| 200 mph | 321.868 km/h |
| 250 mph | 402.335 km/h |
| 500 mph | 804.67 km/h |
| 750 mph | 1207.005 km/h |
| 1000 mph | 1609.34 km/h |
| 5000 mph | 8046.7 km/h |
How to Convert Miles per Hour to Kilometers per Hour
To convert miles per hour to kilometers per hour, use the formula: km/h = mph x 1.60934. One mile per hour equals approximately 1.609 kilometers per hour.
Quick Example
10 mph = 16.0934 km/h
About the Miles per Hour to Kilometers per Hour Conversion
Speed is posted in miles per hour in the US and UK but in kilometers per hour almost everywhere else. Drivers, cyclists, and pilots crossing borders convert speeds to stay within local limits.
Worked example: A 70 mph highway speed equals 70 x 1.60934 = 112.7 km/h. A 30 mph town limit is about 48 km/h.
Common Uses
In practice, converting miles per hour to kilometers per hour comes up most often for matching speed-limit signs while driving abroad, comparing vehicle top speeds, reading wind-speed forecasts, and interpreting cycling and running pace data.