MPH to KM/H Converter
Type a number to convert miles per hour to kilometers per hour.
Quick answer: 1 miles per hour = 1.6093 kilometers per hour. To convert miles per hour to kilometers per hour, multiply the speed in miles per hour by 1.609344. For example, 40 miles per hour = 64.3738 kilometers per hour.
How to use it
- Type the number of miles per hour.
- The answer in kilometers per hour appears in large type.
- Press Swap to convert back.
Formula
To convert miles per hour to kilometers per hour, multiply the speed in miles per hour by 1.609344.
Conversion table
| Miles per hour | Kilometers per hour |
|---|---|
| 10 miles per hour | 16.0934 kilometers per hour |
| 20 miles per hour | 32.1869 kilometers per hour |
| 30 miles per hour | 48.2803 kilometers per hour |
| 40 miles per hour | 64.3738 kilometers per hour |
| 55 miles per hour | 88.5139 kilometers per hour |
| 60 miles per hour | 96.5606 kilometers per hour |
| 70 miles per hour | 112.65 kilometers per hour |
| 100 miles per hour | 160.93 kilometers per hour |
What people use it for
- Cooking, travel and shopping
- Homework and science
- Fitness and health tracking
- Reading instructions and labels
- Working with international sizes
Questions
How do I convert miles per hour to kilometers per hour?
1 miles per hour = 1.6093 kilometers per hour. To convert miles per hour to kilometers per hour, multiply the speed in miles per hour by 1.609344. For example, 40 miles per hour = 64.3738 kilometers per hour.
How do I convert kilometers per hour to miles per hour?
Press Swap, or use the reverse converter linked below.
Is the result exact?
It uses the exact definition of the units and is rounded for display.
Is it free?
Yes. No sign-up, no install and no limit.
Is anything saved or sent?
No. Everything runs in your browser. Only your own best score, where a page shows one, is kept on your device.
Last updated 2026-10-24. Free to use, no sign-up. Made by ficklestudio26.