kilometer per hour
Speedexact by definition
The kilometre per hour is exactly 1,000/3,600 of a metre per second, that is 1/3.6 m/s. The relation is exact by definition, though the decimal 0.2777... repeats and must be truncated when written. It is the standard road speed unit in most of the world.
Watch out: Divide by 3.6 to reach m/s and multiply by 3.6 to come back. The 100 km/h motorway limit is 27.8 m/s, and 62 mph.
| 1 | 0.27777778 |
One kilometer per hour in every speed unit
| 8,766,000,000 | millimeter per year (mm/yr) | |
| 24,000,000 | millimeter per day (mm/day) | |
| 1,000,000 | millimeter per hour (mm/h) | |
| 944,882 | inch per day (in/day) | |
| 78,740.2 | foot per day (ft/d) | |
| 39,370.1 | inch per hour (in/h) | |
| 24,000 | meter per day (m/d) | |
| 16,666.7 | millimeter per minute (mm/min) | |
| 1,000 | meter per hour (m/h) | |
| 656.168 | inch per minute (in/min) | |
| 277.778 | millimeter per second (mm/s) | |
| 54.6807 | foot per minute (ft/min) | convert → |
| 27.7778 | centimeter per second (cm/s) | |
| 16.6667 | meter per minute (m/min) | |
| 10.9361 | inch per second (in/s) | |
| 1 | kilometer per hour (km/h)this unit | |
| 0.911344 | foot per second (ft/s) | convert → |
| 0.621371 | mile per hour (mph) | convert → |
| 0.539957 | knot (kn) | convert → |
| 0.277778 | meter per second (m/s) | convert → |
| 0.000816288 | mach (sea level) (Ma) | |
| 0.000277778 | kilometer per second (km/s) | |
| 9.26567e-10 | speed of light (c) |
Solvers that use speed