Convert kilometres per hour to miles per hour
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1 km/h = 0.621371 mph
1 kilometre per hour = 0.621371 miles per hour
In all units
- kilometres per hour
- 1 km/h
- metres per second
- 0.277778 m/s
- miles per hour
- 0.621371 mph
- knots
- 0.539957 kn
- feet per second
- 0.911344 ft/s
kilometres per hour to miles per hour
| km/h | mph |
|---|---|
| 1 | 0.621371 |
| 2 | 1.24274 |
| 3 | 1.86411 |
| 4 | 2.48548 |
| 5 | 3.10686 |
| 10 | 6.21371 |
| 15 | 9.32057 |
| 20 | 12.4274 |
| 25 | 15.5343 |
| 50 | 31.0686 |
| 100 | 62.1371 |
| 1’000 | 621.371 |
Frequently asked questions
How accurate are the results?
Calculations use the defined conversion factors, e.g. 1 inch = 2.54 cm and 1 pound (lb) = 0.45359237 kg. Six significant digits are shown.
How much is a pound?
The English pound (lb) weighs 453.59 grams. In everyday use in Switzerland and Germany, “ein Pfund” (a pound) often means 500 grams; both are available.
Why does my computer show fewer GB than on the box?
Manufacturers calculate 1 GB = 1000 MB, Windows uses 1024 (actually GiB). Windows therefore shows a 1 TB hard drive as about 931 “GB”.