Method
Speed values are converted through a common base unit so kilometres per hour, miles per hour, knots, and others agree.
Converters / browser tool
Speed Converter
Switch between m/s, km/h, mph, ft/s, and knots.
Get every common speed unit on the same page.
Your inputs stay on your device
Convert speed
live resultConverted value
1 Kilometres per hour (km/h) = 0.6214 Miles per hour (mph)
Context & Reference
How it works
Calculators are most useful when their assumptions are clear. Review these details to better understand the logic behind the results.
How to use it
Enter a speed, select the input unit, and compare the converted values.
Understand the result
Each output is the same rate of distance over time in a different unit.
Example
100 km/h is approximately 62.14 mph.
Notes
The converter does not account for travel conditions, acceleration, or a vehicle’s speedometer accuracy.
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