Miles per Hour and Kilometers per Hour Converter
Convert speed between mph and km/h.
Miles per Hour and Kilometers per Hour Converter measurements
Enter your values, then calculate.
Result
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CategoryConversion
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How to calculate miles per hour and kilometers per hour converter
Convert vehicle, running, cycling, and wind speeds between miles per hour and kilometers per hour.
How the calculation works
One international mile equals 1.609344 kilometers, so the same factor converts speed per hour.
Example
Sixty mph equals about 96.561 km/h; 100 km/h equals about 62.137 mph.
Frequently asked questions
Is 100 km/h exactly 60 mph?
No. It is approximately 62.14 mph.
Quick Insight
Miles per Hour and Kilometers per Hour Converter
One international mile equals 1.609344 kilometers, so the same factor converts speed per hour.
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Your personalized explanation
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Pro Tips for Miles per Hour and Kilometers per Hour Converter
- Use average speed when converting a trip average.
- Do not use this conversion for pace expressed as minutes per mile.
Common Miles per Hour and Kilometers per Hour Converter Mistakes to Avoid
- Speed and pace are reciprocal measures and cannot be converted with the same multiplication factor.
When to Use This Calculator
Convert vehicle, running, cycling, and wind speeds between miles per hour and kilometers per hour.
Content reviewed: August 2026 · Robert Threadgill