MPH to KPH Converter
Convert mph to km/h instantly. 1 mph = 1.60934 km/h. Formula, speed-limit table and what to expect driving across a border.
Written by Rahman · Last reviewed
Quick answer
One mile per hour equals 1.60934 kilometers per hour. Multiply mph by 1.60934 to get km/h, so the common US 65 mph highway limit is about 105 km/h.
| Metre per second (m/s) | 0.44704 |
| Kilometre per hour (km/h) | 1.609344 |
| Mile per hour (mph) | 1 |
| Foot per second (ft/s) | 1.466666667 |
| Knot (kn) | 0.868976242 |
| Mach (at sea level) (Ma) | 0.001313703018 |
mph to km/h conversion table
| mph | km/h |
|---|---|
| 5 mph | 8.046719999 km/h |
| 10 mph | 16.09344 km/h |
| 20 mph | 32.18688 km/h |
| 30 mph | 48.28032 km/h |
| 40 mph | 64.37375999 km/h |
| 50 mph | 80.46719999 km/h |
| 60 mph | 96.56063999 km/h |
| 70 mph | 112.65408 km/h |
| 80 mph | 128.74752 km/h |
| 90 mph | 144.84096 km/h |
| 100 mph | 160.9344 km/h |
| 110 mph | 177.02784 km/h |
| 120 mph | 193.12128 km/h |
| 130 mph | 209.21472 km/h |
How to convert mph to km/h
Crossing from the US into Mexico or from the UK onto continental Europe means every speed-limit and speedometer reading needs a mental conversion: a 65 mph US interstate limit is 105 km/h, and a 30 mph US urban/school-zone limit (deliberately a low, safety-critical figure) is about 48 km/h, close to the 50 km/h limit common in many other countries' urban zones.
Nearly every country in the world uses km/h for road speed limits and car speedometers; the mile-per-hour holdouts are the United States, the United Kingdom, Liberia and Myanmar. A car sold in a km/h country typically shows both scales on the speedometer dial specifically so it can be resold or driven across a border without confusion, and the smaller mph markings are often what gives away that a car was originally built for a mph market.