UnitConKM/H to MPH Converter
Convert kilometers per hour to miles per hour for imported cars, foreign road signs, and international speed references. This conversion is essential for Americans interpreting vehicle specs from European or Asian manufacturers.
Formula
Multiply kilometers per hour by 0.621371 to get miles per hour. To reverse, divide miles per hour by 0.621371 to get km/h.
Quick reference
| Kilometer per Hour (km/h) | Mile per Hour (mph) |
|---|---|
| 30 | 18.64114 |
| 50 | 31.06856 |
| 60 | 37.28227 |
| 80 | 49.7097 |
| 100 | 62.13712 |
| 110 | 68.35083 |
| 120 | 74.56454 |
| 130 | 80.77825 |
| 150 | 93.20568 |
| 200 | 124.2742 |
About these units
Kilometer per Hour
The kilometer per hour arose naturally as roads and railways adopted the metric system in Europe during the 19th century. It is now mandated on road signs throughout the EU and most of the world.
Mile per Hour
The mile per hour has been the standard US road speed unit since early automobile regulations. The US is one of only three countries still using imperial units on public roads.
Frequently asked questions
120 × 0.621371 ≈ 74.56 mph.
Approximately 62.14 mph. A useful benchmark for highway speeds.
200 × 0.621371 ≈ 124.27 mph.