Speed Converter
Type a value and choose units — results update instantly. Conversion factors follow SI and NIST definitions.
To
1 km/h = 0.6213712 mph
| m/s | 0.277778 |
| km/h | 1 |
| mph | 0.621371 |
| ft/s | 0.911344 |
| knot | 0.539957 |
For educational and general reference only. Results depend on the accuracy of the values entered and are rounded to the selected precision. Verify critical designs with a qualified engineer and applicable codes. Full disclaimer