Speed
km/h to mph
Convert between kilometers per hour and miles per hour, using the exact mile definition.
How this is calculated
- mph = km/h ÷ 1.609344
- km/h = mph × 1.609344
Checked against known values
- 1 mph = 1.609344 km/h
- 100 km/h = 62.137119 mph
- 60 mph = 96.56064 km/h