Convert Miles Per Hour to Kilometers Per Hour
1 mph = 1.609344 km/h. Enter any value below.
Converted to every unit
Advertisement
Miles Per Hour to Kilometers Per Hour formula
km/h = mph × 1.609344
Miles per hour is the speed unit used on US and UK roads. Kilometers per hour is used for road speeds in most countries.
Worked example
To convert 5 mph, multiply by 1.609344: 5 mph × 1.609344 = 8.04672 km/h.
Miles Per Hour to Kilometers Per Hour conversion table
| Miles Per Hour | Kilometers Per Hour |
|---|---|
| 1 mph | 1.609344 km/h |
| 2 mph | 3.218688 km/h |
| 3 mph | 4.828032 km/h |
| 4 mph | 6.437376 km/h |
| 5 mph | 8.04672 km/h |
| 6 mph | 9.656064 km/h |
| 7 mph | 11.265408 km/h |
| 8 mph | 12.874752 km/h |
| 9 mph | 14.484096 km/h |
| 10 mph | 16.09344 km/h |
| 12 mph | 19.312128 km/h |
| 15 mph | 24.14016 km/h |
| 20 mph | 32.18688 km/h |
| 25 mph | 40.2336 km/h |
| 30 mph | 48.28032 km/h |
| 40 mph | 64.37376 km/h |
| 50 mph | 80.4672 km/h |
| 75 mph | 120.7008 km/h |
| 100 mph | 160.9344 km/h |
| 250 mph | 402.336 km/h |
| 500 mph | 804.672 km/h |
| 1,000 mph | 1,609.344 km/h |
Frequently asked questions
How many kilometers per hour are in a miles per hour?
1 mph equals 1.609344 km/h.
How do I convert miles per hour to kilometers per hour?
Use the formula km/h = mph × 1.609344. For example, 5 mph = 8.04672 km/h.
Last reviewed: October 2026 · Uses exact, internationally defined conversion factors.