Quick answer: 1 mph = 1.609344 km/h
About the Miles per hour to Kilometres per hour
There are 1.609344 kilometres per hour in one miles per hour, so to convert miles per hour to kilometres per hour multiply by 1.609344.
The table below lists common values; type any number above for an exact result.
How to convert miles per hour to kilometres per hour (mph to km/h)
- Enter your numbers (or keep the example).
- The result updates instantly as you type.
- Copy the result, or copy the link: it keeps your numbers so you can share them.
miles per hour to kilometres per hour conversion table
| mph | km/h |
|---|---|
| 1 mph | 1.609344 km/h |
| 2 mph | 3.218688 km/h |
| 5 mph | 8.04672 km/h |
| 10 mph | 16.09344 km/h |
| 20 mph | 32.18688 km/h |
| 25 mph | 40.2336 km/h |
| 50 mph | 80.4672 km/h |
| 75 mph | 120.7008 km/h |
| 100 mph | 160.9344 km/h |
| 250 mph | 402.336 km/h |
| 500 mph | 804.672 km/h |
| 1,000 mph | 1,609.34 km/h |
How it's calculated
km/h = mph × 1.609344
Features
- Instant resultsUpdates as you type.
- Shareable linkThe URL keeps your inputs.
- Reference tableCommon values on this page.
- Works offlineRuns in your browser.
Frequently asked questions
How many kilometres per hour are in 1 miles per hour?
1 mph = 1.609344 km/h.
How many miles per hour are in 1 kilometres per hour?
1 km/h = 0.62137119 mph.
Is the Miles per hour to Kilometres per hour free?
Yes, the Miles per hour to Kilometres per hour is free with no sign-up, no limits and no ads covering the result.
Does it work on my phone?
Yes. It works in any modern browser on phones, tablets and computers, and keeps working offline once the page has loaded.
Last updated · Processing happens locally in your browser.