Kilometres per Hour to Miles per Hour Converter

About this converter

Road signs and dashboards in the UK use miles per hour, while many manuals, specs and international sites use kilometres per hour. The relationship between them is fixed: 1 mile equals 1.609344 kilometres. To change km/h to mph, divide by 1.609344.

To change mph to km/h, multiply by 1.609344. This page applies that exact factor as you type so you can translate car specs, cycling speeds and speed limits in either direction with no fuss. The presets cover common limits and travel speeds, which makes it quick to compare numbers across countries or sense check handbook figures.

Because the factor is exact, you will see the same results wherever you look, and you do not need a printed table for reference. Use this when hiring a car abroad, reading reviews, logging rides or adjusting a speed alert. The layout keeps inputs and results uncluttered, so you can get the answer in a second and move on. If you spend time between metric and imperial, bookmark this converter for a dependable, straightforward translation between km/h and mph.