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
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)
Useful context
How it works
Use the calculator first, then scan the details below when you want more context about the inputs, result, or assumptions.
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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