Miles per Hour to Kilometers per Hour converter
Convert miles per hour (mph) to kilometers per hour (km/h) — results update instantly as you type.
Miles per Hour to Kilometers per Hour
To
1 mph = 1.609344 km/h
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How to convert Miles per Hour to Kilometers per Hour
Speed units depend on context: road signs use km/h or mph, physics uses meters per second, and ships and aircraft use knots. Converting between them is essential for travel, sport, and science.
Everything converts through meters per second. One km/h is exactly 1/3.6 m/s, one mph is exactly 0.44704 m/s, and one knot is one nautical mile per hour — about 0.5144 m/s.
Formula
mph × 1.609344 = km/h
Multiply your miles per hour value by 1.609344 to get kilometers per hour. For the reverse, divide by the same factor.
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 |
| 5 mph | 8.04672 km/h |
| 10 mph | 16.09344 km/h |
| 25 mph | 40.2336 km/h |
| 100 mph | 160.9344 km/h |
Common use cases
- Understanding foreign speed limits while driving abroad
- Wind speed readings between knots and km/h
- Running and cycling pace comparisons
- Physics problems requiring SI units
Frequently asked questions
Multiply mph by 1.609344. For a quick estimate, multiply by 1.6 — so 60 mph is about 96 km/h (exactly 96.56).