Miles per Hour to Kilometers per Hour converter (mph to km/h)
Convert Miles per Hour (mph) to Kilometers per Hour (km/h) with this free calculator. Type a value, press Convert, and the page applies the same factor shown in the formula below — no rounded shortcut, and nothing is stored on a server.
Kilometers per Hour to Miles per Hour (km/h to mph) ►
How to convert Miles per Hour to Kilometers per Hour
1 mile per hour (mph) is equal to 1.60934 kilometers per hour (km/h).
kmh = mph × 1.60934
Multiply the speed in mph by 1.60934:
Example: Convert 60 mph to km/h:
kmh = 60 × 1.60934 = 96.5606 kmh
What is a Miles per Hour?
The Miles per Hour (mph) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
What is a Kilometers per Hour?
The Kilometers per Hour (km/h) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
This page converts speed from Miles per Hour into Kilometers per Hour. One mph equals 1.60934 km/h.
Miles per Hour to Kilometers per Hour conversion table
Common mph values and the matching km/h result, calculated with the same factor as the widget. Highlight a nearby row if you want a quick check without entering a number.
| Miles per Hour (mph) | Kilometers per Hour (km/h) |
|---|---|
| 5 mph | 8.0467 km/h |
| 10 mph | 16.0934 km/h |
| 20 mph | 32.1868 km/h |
| 30 mph | 48.2802 km/h |
| 50 mph | 80.467 km/h |
| 60 mph | 96.5604 km/h |
| 70 mph | 112.6538 km/h |
| 80 mph | 128.7472 km/h |
| 100 mph | 160.934 km/h |
| 120 mph | 193.1208 km/h |
How this calculator works
The form on this page is a Miles per Hour-to-Kilometers per Hour converter. After you enter a number, JavaScript multiplies or rearranges it with the published conversion factor and writes the km/h result in the output box. The step-by-step panel repeats the arithmetic so you can copy it into homework or a spreadsheet.
Reviewed by Hamsen, founder of GigaTables and a biology engineer. See the about page for how formulas are checked before a tool is published.
FAQ
How many km/h are in 1 mph?
1 mph = 1.60934 km/h.
How do I convert Miles per Hour to Kilometers per Hour?
Multiply the speed in mph by 1.60934:
Is this mph to km/h converter free?
Yes. GigaTables calculators are free to use in a browser. You do not need an account, and the values you type are not uploaded.