KM/H to MPH: km/h to Miles per Hour
Type a speed in kilometres per hour to get miles per hour, or the other way round. Results update as you type.
How to convert km/h to mph
Multiply kilometres per hour by 0.621371. For example, 100 km/h × 0.621371 = 62.14 mph. To go from mph to km/h, multiply by 1.609344.
A handy approximation: multiply km/h by 6 and divide by 10. 120 km/h is about 72 mph (exactly 74.56).
Everyday speeds in mph
- Walking: 5 km/h = 3.1 mph
- Running: 10 km/h = 6.2 mph
- Cycling: 25 km/h = 15.5 mph
- Urban speed limit: 50 km/h = 31 mph
- Motorway: 130 km/h = 81 mph
For live speed in mph or km/h, use the GPS speedometer. For knots and metres per second too, try the full speed converter.
Why it matters on the road
Hire cars abroad often show speed in the local unit only, and many dashboards print the second unit small and hard to read. Converting the posted limit before you set off avoids the most common mistake visitors make: reading a 100 km/h limit as 100 mph, or a 60 mph limit as 60 km/h.
Conversion table
| km/h | mph |
|---|---|
| 5 km/h | 3.11 mph |
| 10 km/h | 6.21 mph |
| 15 km/h | 9.32 mph |
| 20 km/h | 12.43 mph |
| 25 km/h | 15.53 mph |
| 30 km/h | 18.64 mph |
| 40 km/h | 24.85 mph |
| 50 km/h | 31.07 mph |
| 60 km/h | 37.28 mph |
| 70 km/h | 43.50 mph |
| 80 km/h | 49.71 mph |
| 90 km/h | 55.92 mph |
| 100 km/h | 62.14 mph |
| 110 km/h | 68.35 mph |
| 120 km/h | 74.56 mph |
| 130 km/h | 80.78 mph |
| 140 km/h | 86.99 mph |
| 150 km/h | 93.21 mph |
| 200 km/h | 124.27 mph |
| 250 km/h | 155.34 mph |
| 300 km/h | 186.41 mph |
km/h to mph: frequently asked questions
How many mph is 1 km/h?
1 kilometre per hour is 0.621371 miles per hour.
What is 100 km/h in mph?
100 km/h is 62.14 mph.
What is 120 km/h in mph?
120 km/h is 74.56 mph.
How do I convert km/h to mph quickly?
Multiply by 0.62, or multiply by 6 and divide by 10 for a rough answer.