Miles per hour to Kilometers per hour – mile per hour to kilometer per hour Converter
1 mph = 1.609344 km/h
Formula
km/h = mph × 1.609344
Miles per hour to kilometers per hour conversion table
| miles per hour (mph) | kilometers per hour (km/h) |
|---|---|
| 0.5 mph | 0.804672 km/h |
| 1 mph | 1.609344 km/h |
| 2 mph | 3.21869 km/h |
| 3 mph | 4.82803 km/h |
| 5 mph | 8.04672 km/h |
| 10 mph | 16.0934 km/h |
| 20 mph | 32.1869 km/h |
| 25 mph | 40.2336 km/h |
| 50 mph | 80.4672 km/h |
| 75 mph | 120.701 km/h |
| 100 mph | 160.934 km/h |
| 250 mph | 402.336 km/h |
| 500 mph | 804.672 km/h |
| 1000 mph | 1609.34 km/h |
| 5000 mph | 8046.72 km/h |
Miles per hour and kilometers per hour are both speed units. One mile per hour equals 1.609344 kilometers per hour; enter any value above for an instant result, or use the table for common conversions.
Sanity-check examples
1 mph = 1.60934 km/h10 mph = 16.0934 km/h100 mph = 160.934 km/h
Common pitfalls and look-alike units
A knot is one nautical mile per hour (1 kn ≈ 1.852 km/h) — not a land mile. Wind speeds in m/s and km/h are also easy to mix up: typhoon reports usually quote m/s.
Frequently asked questions
How many kilometers per hour are in a mile per hour?
1 mile per hour (mph) equals 1.609344 kilometer per hour (km/h).
How do I convert miles per hour to kilometers per hour?
Multiply the mile per hour value by 1.609344 to get kilometer per hour — for example, 2 miles per hour = 3.21869 kilometer per hour.
How do I convert kilometers per hour back to miles per hour?
1 kilometer per hour is approximately 0.621371 mile per hour. Use the swap button or the reverse conversion page linked on this page.