mph to km/h Converter
Convert mph to km/h instantly: 1 mph = 1.60934 km/h. Free converter with the formula, a reference table and FAQs — no sign-up.
| mph | km/h |
|---|
How to convert mph to km/h
Enter your value
Type the number of mph you want to convert into the left box. The result in km/h appears instantly in the right box. You can also type into the right box to convert in the other direction.
Use the swap button
Click the ⇄ Swap button to reverse the conversion — km/h to mph. Your current value carries across so you don't have to re-enter anything.
About mph and km/h
mph and km/h are common speed measurements.
Worked examples: mph to km/h
Multiply the mph value by 1.60934 to get km/h. A few quick examples:
- 5 mph × 1.60934 = 8.0467 km/h
- 25 mph × 1.60934 = 40.2335 km/h
- 250 mph × 1.60934 = 402.335 km/h
Related conversions
| mph | km/h |
|---|---|
| 1 | 1.609 |
| 5 | 8.047 |
| 10 | 16.09 |
| 20 | 32.19 |
| 25 | 40.23 |
| 30 | 48.28 |
Frequently asked questions
How do I convert mph to km/h?
To convert mph to km/h, multiply by 1.60934. Or use the calculator above for instant results.
How many km/h are in 1 mph?
1 mph equals 1.60934 km/h.
Is the mph to km/h converter free?
Yes, the mph to km/h converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.