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Quick Conversion Tools

MPH ↔ KM/H Converter

Convert speed between miles per hour (MPH) and kilometers per hour (KM/H).

Conversion Direction
Speed (MPH)
Result
Enter a value, then click Convert.
Please enter a valid value.

About This Speed Converter

Use this MPH ↔ KM/H converter to switch between miles per hour (MPH) and kilometers per hour (KM/H). This is useful for road signs, travel planning, and comparing vehicle speeds across countries that use different measurement systems.

Enter your speed, choose the direction, and click Convert. The calculation uses the standard definition: 1 mph = 1.609344 km/h.

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