Speed Converter
Speed conversion is essential for travel, athletics, aviation, and physics homework. Convert miles per hour to kilometers per hour, meters per second to mph, and knots to km/h. Pace and running calculators in Health complement these converters when you need minutes per mile instead of speed.
Converter
Select units, then type a value
Every speed unit lives in these two lists — no extra pages to hunt through.
1.609344
Formula: Kilometer per hour = Mile per hour × 1.609344
Mile per hour to Kilometer per hour table
Common values for the pair currently selected above.
| mph | km/h |
|---|---|
| 1 | 1.609344 |
| 2 | 3.218688 |
| 3 | 4.828032 |
| 4 | 6.437376 |
| 5 | 8.04672 |
| 6 | 9.656064 |
| 7 | 11.265408 |
| 8 | 12.874752 |
| 9 | 14.484096 |
| 10 | 16.09344 |
| 20 | 32.18688 |
| 50 | 80.4672 |
| 100 | 160.9344 |
| 250 | 402.336 |
| 500 | 804.672 |
| 1,000 | 1,609.344 |
Units on this converter
- Meter per second (m/s)
- Kilometer per hour (km/h)
- Mile per hour (mph)
- Knot (kn)
- Foot per second (ft/s)
- Mach (Ma)
FAQ
How do I convert speed units on this page?+
Choose the starting unit in From, the target unit in To, then type a number. All 6 speed units are in those dropdowns — there is not a separate page for each pair.
Which speed units can I convert?+
Meter per second (m/s), Kilometer per hour (km/h), Mile per hour (mph), Knot (kn), Foot per second (ft/s), Mach (Ma).
How do I convert miles per hour to kilometers per hour?+
Select Mile per hour in From and Kilometer per hour in To, then enter the value. The result updates immediately.
Why is there one page instead of a page for every conversion?+
One strong converter per category is easier to use and cleaner for search than hundreds of nearly identical pair pages.