KM/H to MPH Converter
Created by : KMPH to MPH Speed Converter
Have you ever wondered why cars show different speed numbers in different countries? Or why your favorite race car video game shows speeds in "km/h" while your friend's game shows "mph"? Let's learn about these two ways of measuring speed and how to convert between them!
How to Convert Kmph to Mph
To convert kilometers per hour (km/h) to miles per hour (mph), use the following formula:
$$ \text{km/h} = \text{mph} \times 1.60934 $$
Here are some Examples:
- 120 km/h to mph: 120 × 0.621371 = 74.56 mph
- 100 km/h to mph: 100 × 0.621371 = 62.14 mph
- 328 km/h to mph: 328 × 0.621371 = 203.81 mph
What are KM/H and MPH?
KM/H (Kilometers per Hour) tells us how many kilometers something travels in one hour. Most countries around the world use km/h, including Canada, Australia, India, and most of Europe.
MPH (Miles per Hour) tells us how many miles something travels in one hour. The United States, United Kingdom (on roads), and a few other countries use mph.
| Km/h (Kmph) | Mph | What Goes This Fast? |
|---|---|---|
| 5 | 3.11 | Walking speed |
| 15 | 9.32 | Jogging/Running |
| 25 | 15.53 | Fast bicycle ride |
| 40 | 24.85 | School zone speed limit |
| 60 | 37.28 | City driving |
| 80 | 49.71 | Highway driving |
| 100 | 62.14 | Fast highway speed |
| 120 | 74.56 | Racing car speed |
| 200 | 124.27 | High-speed train |
| 300 | 186.41 | Super sports car |
Quick Reference for Common Speeds
- 60 km/h ≈ 37.28 mph (Typical city speed limit)
- 100 km/h ≈ 62.14 mph (Highway speed)
- 120 km/h ≈ 74.56 mph (Fast highway speed)
- 328 km/h ≈ 203.81 mph (Supercar speed)
FAQ on KMPH to MPH Speed Converter
Long ago, different countries created their own ways to measure things. Most countries decided to use the metric system, which includes kilometers and km/h. But some countries like the United States kept their old system called the imperial system, which uses miles and mph. It's like how some people say "elevator" and others say "lift" - different words for the same thing! When you travel to different countries, you'll see different speed signs, but they all mean the same thing: how fast you can go safely.
80 km/h is almost exactly the same as 50 mph! When we convert 80 km/h to mph, we get about 49.71 mph - that's only a tiny bit slower than 50 mph. Here's a fun way to remember: 80 km/h ≈ 50 mph. So if you see a speed limit sign that says 80 km/h in Canada and then see a 50 mph sign in America, they're telling you almost the same speed! The cars would be going at nearly the same pace.
Animals don't know about km/h or mph - they just run! But scientists measure their speeds and can tell us in either unit. Here are some cool examples:
- A cheetah runs about 110 km/h (68 mph) - the fastest land animal!
- A horse gallops around 55 km/h (34 mph)
- A dog (like a greyhound) runs about 70 km/h (43 mph)
- An ostrich can run 70 km/h (43 mph) - the fastest bird on land!
- A human (like Olympic runner Usain Bolt) runs about 37 km/h (23 mph) at top speed