MPH to KPH Converter
Convert miles per hour to kilometers per hour and back instantly for driving, sports and weather reports.
Last updated: May 2026
Enter a value to see the conversion instantly.
How to convert mph to kph
Enter a value in miles per hour to instantly see the equivalent in kilometers per hour. The formula is: kph = mph x 1.609344. The reverse: mph = kph x 0.621371. This conversion is essential for international driving and athletic performance comparisons.
Common reference values
| MPH (miles/hour) | KPH (km/hour) | Typical use |
|---|---|---|
| 25 mph | 40.23 kph | Urban speed limit |
| 30 mph | 48.28 kph | UK city speed limit |
| 50 mph | 80.47 kph | Rural road speed |
| 60 mph | 96.56 kph | US highway minimum |
| 65 mph | 104.61 kph | US Interstate limit |
| 70 mph | 112.65 kph | UK motorway limit |
| 80 mph | 128.75 kph | Fast highway speed |
| 100 mph | 160.93 kph | High-speed driving |
Understanding mph and kph
MPH is used for speed in the United States, United Kingdom and a few other countries. KPH (or km/h) is used everywhere else, including continental Europe, Australia and Asia. The conversion factor 1.609344 km per mile is exact. Speed limits, GPS readings and vehicle speedometers often need conversion when traveling internationally.
When You'll Need This Conversion
Use this converter for: International driving, comparing race speeds, understanding US/UK weather reports, converting vehicle specifications, GPS speed display.
Frequently Asked Questions
My rental car in the US shows only mph — what are the common speed limits?
In cities and residential areas: 25–35 mph (40–56 kph). On US highways: 55–65 mph (88–104 kph). On Interstates: 65–80 mph (104–128 kph), depending on state. School zones: 15–25 mph (24–40 kph). If your GPS shows kph, divide by 1.609 to get the equivalent mph limit.
How fast is 60 mph in kph?
60 mph equals approximately 96.56 kph. This is a common US highway speed. Most US Interstates have limits between 65-80 mph (104.6-128.7 kph).
What is the European highway speed limit in mph?
Most European motorways limit speed to 120-130 kph, which is 74.6-80.8 mph. Germany has unlimited speed on some Autobahn sections but advisory speed is 130 kph (80.8 mph).
Is the GPS speed reading exact?
GPS speed is accurate within 1-2% under normal conditions. Some vehicle speedometers read 5-10% higher than actual speed for legal margin. GPS is often more accurate than the vehicle gauge.
How do I convert running pace from mph to kph?
For running pace, convert speed first: 10 mph = 16.09 kph. Then calculate pace: 60 minutes / 16.09 kph = 3.73 min/km. Use a dedicated pace converter for accuracy.