Miles per Hour to Kilometers per Hour Converter
1 mph = 1.60934 km/h
Understanding how miles per hour relate to kilometers per hour is important across athletics, aviation, and meteorology. Miles per hour became common in the US and UK with the advent of automobiles in the early 20th century. In practice, 1 mph equals 1.60934 km/h.
Did you know? Did you know? Kilometers per hour became the standard speed unit in most countries as the metric system spread in the 19th and 20th centuries. The fastest recorded baseball pitch was 105.1 miles per hour, and professionals in transportation regularly need to convert between these units.
Conversion Formula
km/h = mph x 1.60934
To convert mph to km/h, multiply by 1.60934. This is the same factor as miles to km, since the hour unit is the same.
Miles per Hour to Kilometers per Hour Table
| Miles per Hour (mph) | Kilometers per Hour (km/h) |
|---|---|
| 5 | 8.04672 |
| 15 | 24.1402 |
| 25 | 40.2336 |
| 30 | 48.2803 |
| 55 | 88.5139 |
| 60 | 96.5606 |
| 65 | 104.607 |
| 70 | 112.654 |
| 75 | 120.701 |
| 100 | 160.934 |
About Miles per Hour to Kilometers per Hour
Converting mph to km/h is necessary when American drivers rent cars abroad, when comparing vehicle specs across markets, and for understanding international weather reports about wind speeds.
US speed limits in km/h: a school zone at 15 mph is 24.1 km/h. A residential street at 25 mph equals 40.2 km/h. A typical urban limit of 35 mph is 56.3 km/h. Highway speeds of 55-75 mph range from 88.5 to 120.7 km/h.
When renting a car in Europe, the speedometer may only show km/h. Knowing that 65 mph (the American highway cruise) equals about 105 km/h helps avoid speeding tickets. On the Autobahn, your 80 mph cruise is only 128.7 km/h - quite moderate by German standards.
In sports, pitch speeds in baseball convert dramatically. A 100 mph fastball is 160.9 km/h. A 90 mph slider is 144.8 km/h. The fastest recorded pitch, 105.8 mph, is 170.3 km/h.
Tennis serves also use this conversion. The fastest serve on record is 163.7 mph (263.4 km/h). A typical professional serve of 120 mph is 193.1 km/h.
For quick conversion, multiply mph by 1.6. So 60 mph x 1.6 = 96 km/h (actual: 96.56 km/h).
Frequently Asked Questions
How fast is 60 mph in km/h?
60 mph equals 96.56 km/h. This is a common US highway speed and close to the 100 km/h speed limit in many countries.
What is 70 mph in km/h?
70 mph equals 112.65 km/h. This is the maximum highway speed limit in many US states.
How do I convert mph to km/h quickly?
Multiply by 1.6 for a quick estimate. So 50 mph x 1.6 = 80 km/h (actual: 80.47 km/h).
What is the fastest speed ever recorded for a car?
The ThrustSSC set the land speed record at 763 mph (1,228 km/h) in 1997, breaking the sound barrier. The fastest production car achieved 304.77 mph (490.5 km/h).