miles-per-hour to kilometers-per-hour converter
Convert Mile/hour (mph) to Kilometer/hour (km/h) for school, work, travel or projects. Enter any finite value, reverse the units, copy the result and keep the calculation on your device.
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Result
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Formula
1 mph = 1.609344 km/h
The converter uses the defined base unit for Speed; temperature pairs use an offset formula. Values are rounded only for display.
Worked example
For example, 5 mph = 8.04672 km/h. Try another value above to calculate it locally.
Common values
Related conversions
kilometers-per-hour to miles-per-hour converter →How to use the miles-per-hour to kilometers-per-hour
- 1 Enter a value in Mile/hour (mph).
- 2 Check the Mile/hour (mph) to Kilometer/hour (km/h) formula and common values table.
- 3 Copy the result or swap the units for the reverse conversion.
Frequently asked questions
What does the miles-per-hour to kilometers-per-hour converter calculate?
Mile/hour (mph) values are converted to Kilometer/hour (km/h) using the selected unit definition. Temperature uses its offset formula rather than a simple multiplication.
Does this converter upload my value?
No. The calculation runs locally in your browser, and the value is not sent to a server.
Can I convert the result back?
Yes. Use the reverse conversion link or swap the units in the converter.