1 mph = 1.609344 km/h
| Miles per hour (mph) | Kilometers per hour (km/h) |
|---|---|
| 5 | 8.047 |
| 10 | 16.093 |
| 15 | 24.14 |
| 20 | 32.187 |
| 25 | 40.234 |
| 30 | 48.28 |
| 35 | 56.327 |
| 40 | 64.374 |
| 45 | 72.42 |
| 50 | 80.467 |
| 55 | 88.514 |
| 60 | 96.561 |
| 65 | 104.607 |
| 70 | 112.654 |
| 75 | 120.701 |
| 80 | 128.748 |
| 90 | 144.841 |
| 100 | 160.934 |
| 120 | 193.121 |
| 150 | 241.402 |
To convert miles per hour to kilometers per hour, multiply by 1.60934.
1 mph = 1.609344 km/h
Convert 65 mph (US highway speed) to km/h: 65 × 1.60934 = 104.61 km/h
Convert 30 mph (city speed limit) to km/h: 30 × 1.60934 = 48.28 km/h
To convert km/h to mph, multiply by 0.621371.
\u2022 30 mph (48 km/h) is a typical city driving speed.
\u2022 65 mph (105 km/h) is a standard US interstate speed limit.
\u2022 100 mph (161 km/h) is the top speed of many economy cars.
\u2022 The world’s fastest human sprint reaches about 27.5 mph (44.3 km/h).
Miles per hour and kilometers per hour are the two speed units you’ll encounter on roads worldwide. The US, UK, and a handful of other countries use mph, while the rest of the world uses km/h for speed limits, vehicle speedometers, and weather wind speeds.
When renting a car in Europe, you’ll see speed limits in km/h. Common European speed limits and their mph equivalents: 30 km/h = 18.6 mph (school zones), 50 km/h = 31.1 mph (urban), 80 km/h = 49.7 mph (rural roads), 100 km/h = 62.1 mph (expressways), 120-130 km/h = 74.6-80.8 mph (motorways). The German Autobahn famously has sections with no speed limit.
Wind speeds in the US are reported in mph, while international forecasts use km/h (or knots for marine forecasts). A tropical storm has winds of 39-73 mph (63-118 km/h). Hurricane force starts at 74 mph (119 km/h). Understanding both units helps interpret weather warnings when traveling.
Baseball pitching speed is measured in mph in the US (a fastball at 95-100 mph = 153-161 km/h). Soccer/football kick speeds are often reported in km/h internationally. Cricket bowling speeds are in km/h. Tennis serve speeds are quoted in both depending on the tournament location.
Multiply the mph value by 1.60934. For example, 60 mph × 1.60934 = 96.56 km/h.
100 mph is approximately 160.93 km/h.
60 mph is approximately 96.56 km/h.
Countries that adopted the metric system use km/h. The US, UK, and some former British territories retained mph. The UK uses mph on roads despite officially adopting metric for most other measurements.