Kilometers Per Hour Conversion
The kilometer per hour is a unit used to measure speed. Use one of the conversion calculators below to convert to another unit of measure, or read on to learn more about kilometers per hour.
Kilometer Per Hour Conversion Calculators
Choose a unit of speed to convert to.
- Convert kilometers per hour to knots
- 1 kilometer per hour is equal to 0.539957 knots
- Convert kilometers per hour to Mach
- 1 kilometer per hour is equal to 0.00081 Mach
- Convert kilometers per hour to speed of sound
- 1 kilometer per hour is equal to 0.00081 speed of sound
- Convert kilometers per hour to speed of light
- 1 kilometer per hour is equal to 9.2657E-10 speed of light
- Convert kilometers per hour to miles per hour
- 1 kilometer per hour is equal to 0.621371 miles per hour
- Convert kilometers per hour to feet per second
- 1 kilometer per hour is equal to 0.911344 feet per second
- Convert kilometers per hour to kilometers per second
- 1 kilometer per hour is equal to 0.000278 kilometers per second
- Convert kilometers per hour to meters per second
- 1 kilometer per hour is equal to 0.277778 meters per second
- Convert kilometers per hour to centimeters per second
- 1 kilometer per hour is equal to 27.777778 centimeters per second
Kilometer Per Hour Definition and Usage
Kilometers per hour are a measurement of speed expressing the distance travelled in kilometers in one hour.
The kilometer per hour, or kilometre per hour, is an SI unit of speed in the metric system. Kilometers per hour can be abbreviated as km/h, and are also sometimes abbreviated as kph. For example, 1 kilometer per hour can be written as 1 km/h or 1 kph.
Kilometers per hour can be expressed using the formula:
vkm/s = dkmthr
The velocity in kilometers per hour is equal to the distance in kilometers divided by time in hours.
Kilometers Per Hour Measurement Conversion Table
| kilometers per hour | knots | Mach | speed of sound | speed of light | miles per hour | feet per second | kilometers per second | meters per second | centimeters per second |
|---|---|---|---|---|---|---|---|---|---|
| 1 km/h | 0.539957 kn | Mach 0.00081 | 0.00081 | 0.00000000092657 c | 0.621371 mph | 0.911344 ft/s | 0.000278 km/s | 0.277778 m/s | 27.777778 cm/s |
| 2 km/h | 1.079914 kn | Mach 0.00162 | 0.00162 | 0.0000000018531 c | 1.242742 mph | 1.822689 ft/s | 0.000556 km/s | 0.555556 m/s | 55.555556 cm/s |
| 3 km/h | 1.61987 kn | Mach 0.00243 | 0.00243 | 0.0000000027797 c | 1.864114 mph | 2.734033 ft/s | 0.000833 km/s | 0.833333 m/s | 83.333333 cm/s |
| 4 km/h | 2.159827 kn | Mach 0.003239 | 0.003239 | 0.0000000037063 c | 2.485485 mph | 3.645378 ft/s | 0.001111 km/s | 1.111111 m/s | 111.111111 cm/s |
| 5 km/h | 2.699784 kn | Mach 0.004049 | 0.004049 | 0.0000000046328 c | 3.106856 mph | 4.556722 ft/s | 0.001389 km/s | 1.388889 m/s | 138.888889 cm/s |
| 6 km/h | 3.239741 kn | Mach 0.004859 | 0.004859 | 0.0000000055594 c | 3.728227 mph | 5.468066 ft/s | 0.001667 km/s | 1.666667 m/s | 166.666667 cm/s |
| 7 km/h | 3.779698 kn | Mach 0.005669 | 0.005669 | 0.000000006486 c | 4.349598 mph | 6.379411 ft/s | 0.001944 km/s | 1.944444 m/s | 194.444444 cm/s |
| 8 km/h | 4.319654 kn | Mach 0.006479 | 0.006479 | 0.0000000074125 c | 4.97097 mph | 7.290755 ft/s | 0.002222 km/s | 2.222222 m/s | 222.222222 cm/s |
| 9 km/h | 4.859611 kn | Mach 0.007289 | 0.007289 | 0.0000000083391 c | 5.592341 mph | 8.2021 ft/s | 0.0025 km/s | 2.5 m/s | 250 cm/s |
| 10 km/h | 5.399568 kn | Mach 0.008098 | 0.008098 | 0.0000000092657 c | 6.213712 mph | 9.113444 ft/s | 0.002778 km/s | 2.777778 m/s | 277.777778 cm/s |
| 11 km/h | 5.939525 kn | Mach 0.008908 | 0.008908 | 0.000000010192 c | 6.835083 mph | 10.024789 ft/s | 0.003056 km/s | 3.055556 m/s | 305.555556 cm/s |
| 12 km/h | 6.479482 kn | Mach 0.009718 | 0.009718 | 0.000000011119 c | 7.456454 mph | 10.936133 ft/s | 0.003333 km/s | 3.333333 m/s | 333.333333 cm/s |
| 13 km/h | 7.019438 kn | Mach 0.010528 | 0.010528 | 0.000000012045 c | 8.077825 mph | 11.847477 ft/s | 0.003611 km/s | 3.611111 m/s | 361.111111 cm/s |
| 14 km/h | 7.559395 kn | Mach 0.011338 | 0.011338 | 0.000000012972 c | 8.699197 mph | 12.758822 ft/s | 0.003889 km/s | 3.888889 m/s | 388.888889 cm/s |
| 15 km/h | 8.099352 kn | Mach 0.012148 | 0.012148 | 0.000000013899 c | 9.320568 mph | 13.670166 ft/s | 0.004167 km/s | 4.166667 m/s | 416.666667 cm/s |
| 16 km/h | 8.639309 kn | Mach 0.012958 | 0.012958 | 0.000000014825 c | 9.941939 mph | 14.581511 ft/s | 0.004444 km/s | 4.444444 m/s | 444.444444 cm/s |
| 17 km/h | 9.179266 kn | Mach 0.013767 | 0.013767 | 0.000000015752 c | 10.56331 mph | 15.492855 ft/s | 0.004722 km/s | 4.722222 m/s | 472.222222 cm/s |
| 18 km/h | 9.719222 kn | Mach 0.014577 | 0.014577 | 0.000000016678 c | 11.184681 mph | 16.404199 ft/s | 0.005 km/s | 5 m/s | 500 cm/s |
| 19 km/h | 10.259179 kn | Mach 0.015387 | 0.015387 | 0.000000017605 c | 11.806053 mph | 17.315544 ft/s | 0.005278 km/s | 5.277778 m/s | 527.777778 cm/s |
| 20 km/h | 10.799136 kn | Mach 0.016197 | 0.016197 | 0.000000018531 c | 12.427424 mph | 18.226888 ft/s | 0.005556 km/s | 5.555556 m/s | 555.555556 cm/s |
