EngiRef / Speed conversion
Convert Kilometers/hour to Miles/hour (km/h to mph)
1 km/h = 0.621371192 mph. Convert kilometers/hour to miles/hour with the exact factor, a common-values table and a free converter.
Conversion factor
mph = km/h × 0.621371192
1 km/h = 0.621371192 mph
Multiply by 0.621371192 mph to go from kilometers/hour to miles/hour, or divide by it to come back. The factor and every value below are computed by the same converter that runs at /convert, so this page and the tool cannot disagree.
km/h to mph table
| Kilometers/hour (km/h) | Miles/hour (mph) |
|---|---|
| 1 km/h | 0.621371192 mph |
| 2 km/h | 1.24274238 mph |
| 5 km/h | 3.10685596 mph |
| 10 km/h | 6.21371192 mph |
| 20 km/h | 12.4274238 mph |
| 50 km/h | 31.0685596 mph |
| 100 km/h | 62.1371192 mph |
Every figure is computed at build time by the site’s own converter from the speed unit registry. For a value that is not listed, put it into the interactive converter.
Frequently asked questions
How many miles/hour are in one kilometer/hour?
One kilometer/hour is 0.621371192 mph, so 100 km/h is 62.1371192 mph.
What is the formula to convert kilometers/hour to miles/hour?
mph = km/h × 0.621371192. Multiply the value in kilometers/hour by 0.621371192 to get miles/hour.
How do I convert miles/hour back to kilometers/hour?
km/h = mph × 1.609344, so 1 mph is 1.609344 km/h. The mph to km/h page carries the same table in that direction.