MPH to KM/H
Convert miles per hour (mph) to kilometers per hour (km/h) instantly.
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From unit
To unit
Miles per hour
mph
Kilometers per hour
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| Miles per hour (mph) | Kilometers per hour (km/h) |
|---|---|
| 30 mph | 48.28032 km/h |
| 50 mph | 80.4672 km/h |
| 60 mph | 96.56064 km/h |
| 70 mph | 112.65408 km/h |
| 80 mph | 128.74752 km/h |
| 100 mph | 160.9344 km/h |
| 120 mph | 193.12128 km/h |
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Speed limits around the world
The United States, Myanmar, and Liberia are the only countries that primarily use miles per hour (mph) for road speed. The rest of the world uses kilometers per hour (km/h) — a practical difference that matters when driving or reading traffic signs abroad.
Common conversions: 30 mph = 48 km/h (residential), 60 mph = 97 km/h (rural), 70 mph = 113 km/h (UK motorways), 130 km/h = 81 mph (European motorways).
Aircraft and maritime speeds use knots (nautical miles per hour), where 1 knot = 1.852 km/h ≈ 1.151 mph. Weather forecasters also use knots for wind speed, which is why storm categories list both knots and mph.
Frequently asked questions
How do I convert mph to km/h?
Multiply by 1.60934. For example, 60 mph = 96.56 km/h.