Speed Converter
Convert between common speed units instantly.
0.621371
Miles/hour (mph)
1 Kilometers/hour (km/h) = 0.621371 Miles/hour (mph)
Frequently asked questions
What is a knot?+
A knot is one nautical mile per hour (about 1.852 km/h) — the standard unit for speed in aviation and maritime navigation.
Does the result update automatically?+
Yes — there's no button to click. Change the amount or either unit and the result updates instantly.