Convert mph to km/h
Enter a speed in miles per hour and get kilometres per hour straight away. The formula and a full reference table are below.
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Formula: km/h = mph × 1.609344
mph to km/h table
Also written mph to kph or mph to km.
| mph | km/h |
|---|---|
| 5 mph | 8.05 km/h |
| 10 mph | 16.09 km/h |
| 15 mph | 24.14 km/h |
| 20 mph | 32.19 km/h |
| 25 mph | 40.23 km/h |
| 30 mph | 48.28 km/h |
| 35 mph | 56.33 km/h |
| 40 mph | 64.37 km/h |
| 45 mph | 72.42 km/h |
| 50 mph | 80.47 km/h |
| 55 mph | 88.51 km/h |
| 60 mph | 96.56 km/h |
| 65 mph | 104.61 km/h |
| 70 mph | 112.65 km/h |
| 75 mph | 120.7 km/h |
| 80 mph | 128.75 km/h |
| 85 mph | 136.79 km/h |
| 90 mph | 144.84 km/h |
| 100 mph | 160.93 km/h |
| 120 mph | 193.12 km/h |
| 150 mph | 241.4 km/h |
| 200 mph | 321.87 km/h |
See your real speed, in either unit
Apex turns your iPhone into a GPS speedometer — switch between mph, km/h and knots with a tap, and record the whole trip.
Common questions
How do you convert mph to km/h?
Multiply the speed in miles per hour by 1.609344. For example, 80 mph × 1.609344 = 128.7 km/h.
How fast is 80 mph in km/h?
80 mph is 128.7 km/h.
How fast is 70 mph in km/h?
70 mph is 112.7 km/h.
What is the UK motorway limit in km/h?
The UK limit of 70 mph is 112.7 km/h. Most of continental Europe posts 120 or 130 km/h, which is 74.6 and 80.8 mph.