Speed conversion
Miles per Hour to Kilometers per Hour
Convert speed limits, vehicle speeds, running pace, and wind readings from mph to km/h.
Miles per Hour
1 mph
Kilometers per Hour
1.609344 km/h
km/h = mph × 1.609344
The formula
How to convert miles per hour to kilometers per hour
Apply km/h = mph × 1.609344. For example, 1 mph equals 1.609344 km/h.
Precision
Accurate constants, readable results
OmniUnit calculates with the full stored conversion factor, then displays up to 12 significant digits.
Common miles per hour conversions
| Miles per Hour | Kilometers per Hour |
|---|---|
| 1 mph | 1.609344 km/h |
| 5 mph | 8.04672 km/h |
| 25 mph | 40.2336 km/h |
| 55 mph | 88.51392 km/h |
| 65 mph | 104.60736 km/h |
| 100 mph | 160.9344 km/h |