km/h to mph converter
Convert kilometres per hour to miles per hour, and back.
km per hour ⇄ Miles per hour
Works offline1 km per hour = 0.621371 Miles per hour
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How the conversion works
1 km/h = 0.621371 mph, so mph = km/h × 0.6214. A speed of 100 km/h is about 62 mph.
Quick reference table
| km per hour | Miles per hour |
|---|---|
| 10 km per hour | 6.21371 Miles per hour |
| 30 km per hour | 18.6411 Miles per hour |
| 50 km per hour | 31.0686 Miles per hour |
| 60 km per hour | 37.2823 Miles per hour |
| 80 km per hour | 49.7097 Miles per hour |
| 100 km per hour | 62.1371 Miles per hour |
| 120 km per hour | 74.5645 Miles per hour |
| 200 km per hour | 124.274 Miles per hour |
When you need this
Indian speedometers show km/h, but speed limits and car reviews in the US and UK use mph. Handy when renting a car abroad or comparing top speeds.
Frequently asked questions
How fast is 100 km/h in mph?
About 62.1 mph.
What is 60 mph in km/h?
About 96.6 km/h. Type 60 into the mph box.
What is a knot?
A knot is one nautical mile per hour, about 1.852 km/h; it is used at sea and in aviation.
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Page reviewed 25 October 2026.