MPH to KM/H Converter
Convert miles per hour (mph) to kilometers per hour (km/h) instantly. Free online speed converter with conversion table and formula.
Why Convert Speed from MPH to KM/H?
Most countries in the world use kilometers per hour (km/h) as their standard unit for measuring speed. The United States and United Kingdom primarily use miles per hour (mph). Converting between these units is essential when traveling internationally, reading foreign vehicle specifications, or understanding speed limits in different countries.
Whether you're renting a car abroad, following international racing events, or comparing vehicle performance data, knowing how to convert mph to km/h is invaluable.
What is Miles per Hour (mph)?
Miles per hour (mph) is a unit of speed commonly used in the United States, United Kingdom, and a few other countries. It measures the number of miles traveled in one hour.
- One mile equals 1.609344 kilometers
- 1 mph = 1.609344 km/h
- Used for road speed limits in the US and UK
- Common in aviation for wind speed measurements
What is Kilometers per Hour (km/h)?
Kilometers per hour (km/h) is the standard unit of speed used in most countries worldwide. It measures the number of kilometers traveled in one hour.
- One kilometer equals 0.621371 miles
- 1 km/h = 0.621371 mph
- Standard unit for road speed limits globally
- Used in international shipping and transportation
MPH to KM/H Conversion Formula
To convert miles per hour to kilometers per hour, use the following formula:
Conversion Table: MPH to KM/H
Here is a quick reference table for common speed conversions:
| Miles per Hour (mph) | Kilometers per Hour (km/h) | Common Use |
|---|---|---|
| 5 mph | 8.05 km/h | Walking speed |
| 15 mph | 24.14 km/h | Cycling speed |
| 25 mph | 40.23 km/h | City driving |
| 30 mph | 48.28 km/h | Residential area limit |
| 45 mph | 72.42 km/h | Urban road speed |
| 55 mph | 88.51 km/h | Rural road speed |
| 60 mph | 96.56 km/h | Highway speed (US) |
| 65 mph | 104.61 km/h | Interstate speed |
| 70 mph | 112.65 km/h | UK motorway limit |
| 75 mph | 120.70 km/h | High-speed highway |
| 100 mph | 160.93 km/h | Racing / high performance |
| 200 mph | 321.87 km/h | Formula 1 racing |
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About MPH to KM/H Converter
Our free MPH to KM/H converter tool makes it easy to convert speed measurements from miles per hour to kilometers per hour. Whether you're traveling abroad, comparing vehicle specifications, or understanding speed limits in different countries, this tool provides instant and accurate conversions.
How to Use This Tool
- Enter the speed in miles per hour (mph)
- The conversion to kilometers per hour will appear automatically
- View the result instantly
Common Uses
- Travel: Understanding speed limits in metric countries
- Automotive: Comparing vehicle performance specifications
- Sports: Converting race speeds for international events
- Aviation: Wind speed conversions
Quick Reference
- 30 mph = 48.28 km/h
- 60 mph = 96.56 km/h
- 70 mph = 112.65 km/h
- 100 mph = 160.93 km/h