km/h to mph Converter
1 kilometer per hour = 0.6213712 miles per hour
Type a value in either box: the conversion between kilometers per hour (km/h) and miles per hour (mph) updates instantly.
Good to know
Driving abroad? 50 km/h, a common city limit, is about 31 mph, and 100 km/h is about 62 mph.
How to convert kilometers per hour to miles per hour
To convert kilometers per hour to miles per hour, multiply the number of kilometers per hour by 0.6213712. To go the other way, multiply miles per hour by 1.609344.
mph = km/h × 0.6213712
Worked examples
- 30 km/h = 18.64114 mph
- 50 km/h = 31.06856 mph
- 100 km/h = 62.13712 mph
- 120 km/h = 74.56454 mph
km/h to mph conversion table
| Km/h (km/h) | Mph (mph) |
|---|---|
| 1 km/h | 0.6213712 mph |
| 2 km/h | 1.242742 mph |
| 3 km/h | 1.864114 mph |
| 4 km/h | 2.485485 mph |
| 5 km/h | 3.106856 mph |
| 6 km/h | 3.728227 mph |
| 7 km/h | 4.349598 mph |
| 8 km/h | 4.97097 mph |
| 9 km/h | 5.592341 mph |
| 10 km/h | 6.213712 mph |
| 15 km/h | 9.320568 mph |
| 20 km/h | 12.42742 mph |
| 25 km/h | 15.53428 mph |
| 30 km/h | 18.64114 mph |
| 40 km/h | 24.85485 mph |
| 50 km/h | 31.06856 mph |
| 75 km/h | 46.60284 mph |
| 100 km/h | 62.13712 mph |
| 250 km/h | 155.3428 mph |
| 500 km/h | 310.6856 mph |
| 1,000 km/h | 621.3712 mph |
About the units
Km/h (km/h)
Kilometers per hour (km/h) is the speed unit used on road signs and car speedometers in most of the world.
Mph (mph)
Miles per hour (mph) is the speed unit used on roads in the United States and the United Kingdom.
Frequently asked questions
How do I convert kilometers per hour to miles per hour?
mph = km/h × 0.6213712What is 50 km/h in miles per hour?
How many miles per hour are in one kilometer per hour?
How many kilometers per hour are in one mile per hour?
Conversion factors use exact international definitions where they exist (for example 1 inch = 2.54 cm and 1 lb = 0.45359237 kg). Results are rounded for display only.