kilometers-per-hour to miles-per-hour converter
Convert Kilometer/hour (km/h) to Mile/hour (mph) for school, work, travel or projects. Enter any finite value, reverse the units, copy the result and keep the calculation on your device.
🔒 100% private — files never leave your browser
Result
Formula
1 km/h = 0.62137119 mph
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 km/h = 3.106856 mph. Try another value above to calculate it locally.
Common values
When this conversion is useful
Use it to compare and share Speed values without sending the number away from your device.
Related conversions
Mile/hour (mph) → Kilometer/hour (km/h)How to use the kilometers-per-hour to miles-per-hour
- 1 Enter a value in Kilometer/hour (km/h).
- 2 Check the Kilometer/hour (km/h) to Mile/hour (mph) formula and common values table.
- 3 Copy the result or swap the units for the reverse conversion.
Frequently asked questions
What does the kilometers-per-hour to miles-per-hour converter calculate?
Kilometer/hour (km/h) values are converted to Mile/hour (mph) 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.