mph to km/h
Type miles per hour to get km/h, or km/h to get mph.
Metres per second
| mph | km/h | m/s |
|---|---|---|
| 20 mph | 32.2 km/h | 8.9 m/s |
| 25 mph | 40.2 km/h | 11.2 m/s |
| 30 mph | 48.3 km/h | 13.4 m/s |
| 40 mph | 64.4 km/h | 17.9 m/s |
| 50 mph | 80.5 km/h | 22.4 m/s |
| 60 mph | 96.6 km/h | 26.8 m/s |
| 70 mph | 112.7 km/h | 31.3 m/s |
| 80 mph | 128.7 km/h | 35.8 m/s |
How it works
km/h = mph × 1.609344mph = km/h ÷ 1.609344m/s = km/h ÷ 3.6Worked example
- 60 mph × 1.609344
- = 96.56 km/h
- about 97 km/h
Frequently asked questions
What is 70 mph in km/h?
About 112.7 km/h, the UK motorway speed limit.
How do I convert km/h to mph quickly?
Multiply by 0.62: 100 km/h × 0.62 = 62 mph.