| kilometers per hour | 1 km/h | 2 km/h | 3 km/h | 4 km/h | 5 km/h | 6 km/h | 7 km/h | 8 km/h | 9 km/h | 10 km/h | 11 km/h | 12 km/h | 13 km/h | 14 km/h | 15 km/h | 16 km/h | 17 km/h | 18 km/h | 19 km/h | 20 km/h | 21 km/h | 22 km/h | 23 km/h | 24 km/h | 25 km/h | 26 km/h | 27 km/h | 28 km/h | 29 km/h | 30 km/h | 31 km/h | 32 km/h | 33 km/h | 34 km/h | 35 km/h | 36 km/h | 37 km/h | 38 km/h | 39 km/h | 40 km/h | 41 km/h | 42 km/h | 43 km/h | 44 km/h | 45 km/h | 46 km/h | 47 km/h | 48 km/h | 49 km/h | 50 km/h | 51 km/h | 52 km/h | 53 km/h | 54 km/h | 55 km/h | 56 km/h | 57 km/h | 58 km/h | 59 km/h | 60 km/h | 61 km/h | 62 km/h | 63 km/h | 64 km/h | 65 km/h | 66 km/h | 67 km/h | 68 km/h | 69 km/h | 70 km/h | 71 km/h | 72 km/h | 73 km/h | 74 km/h | 75 km/h | 76 km/h | 77 km/h | 78 km/h | 79 km/h | 80 km/h | 81 km/h | 82 km/h | 83 km/h | 84 km/h | 85 km/h | 86 km/h | 87 km/h | 88 km/h | 89 km/h | 90 km/h | 91 km/h | 92 km/h | 93 km/h | 94 km/h | 95 km/h | 96 km/h | 97 km/h | 98 km/h | 99 km/h | 100 km/h |
| speed of light | 9.2656693110598 × 10-10 c | 1.853133862212 × 10-9 c | 2.7797007933179 × 10-9 c | 3.7062677244239 × 10-9 c | 4.6328346555299 × 10-9 c | 5.5594015866359 × 10-9 c | 6.4859685177418 × 10-9 c | 7.4125354488478 × 10-9 c | 8.3391023799538 × 10-9 c | 9.2656693110598 × 10-9 c | 1.0192236242166 × 10-8 c | 1.1118803173272 × 10-8 c | 1.2045370104378 × 10-8 c | 1.2971937035484 × 10-8 c | 1.389850396659 × 10-8 c | 1.4825070897696 × 10-8 c | 1.5751637828802 × 10-8 c | 1.6678204759908 × 10-8 c | 1.7604771691014 × 10-8 c | 1.853133862212 × 10-8 c | 1.9457905553226 × 10-8 c | 2.0384472484332 × 10-8 c | 2.1311039415437 × 10-8 c | 2.2237606346543 × 10-8 c | 2.3164173277649 × 10-8 c | 2.4090740208755 × 10-8 c | 2.5017307139861 × 10-8 c | 2.5943874070967 × 10-8 c | 2.6870441002073 × 10-8 c | 2.7797007933179 × 10-8 c | 2.8723574864285 × 10-8 c | 2.9650141795391 × 10-8 c | 3.0576708726497 × 10-8 c | 3.1503275657603 × 10-8 c | 3.2429842588709 × 10-8 c | 3.3356409519815 × 10-8 c | 3.4282976450921 × 10-8 c | 3.5209543382027 × 10-8 c | 3.6136110313133 × 10-8 c | 3.7062677244239 × 10-8 c | 3.7989244175345 × 10-8 c | 3.8915811106451 × 10-8 c | 3.9842378037557 × 10-8 c | 4.0768944968663 × 10-8 c | 4.1695511899769 × 10-8 c | 4.2622078830875 × 10-8 c | 4.3548645761981 × 10-8 c | 4.4475212693087 × 10-8 c | 4.5401779624193 × 10-8 c | 4.6328346555299 × 10-8 c | 4.7254913486405 × 10-8 c | 4.8181480417511 × 10-8 c | 4.9108047348617 × 10-8 c | 5.0034614279723 × 10-8 c | 5.0961181210829 × 10-8 c | 5.1887748141935 × 10-8 c | 5.2814315073041 × 10-8 c | 5.3740882004147 × 10-8 c | 5.4667448935253 × 10-8 c | 5.5594015866359 × 10-8 c | 5.6520582797465 × 10-8 c | 5.7447149728571 × 10-8 c | 5.8373716659677 × 10-8 c | 5.9300283590783 × 10-8 c | 6.0226850521889 × 10-8 c | 6.1153417452995 × 10-8 c | 6.2079984384101 × 10-8 c | 6.3006551315207 × 10-8 c | 6.3933118246312 × 10-8 c | 6.4859685177418 × 10-8 c | 6.5786252108524 × 10-8 c | 6.671281903963 × 10-8 c | 6.7639385970736 × 10-8 c | 6.8565952901842 × 10-8 c | 6.9492519832948 × 10-8 c | 7.0419086764054 × 10-8 c | 7.134565369516 × 10-8 c | 7.2272220626266 × 10-8 c | 7.3198787557372 × 10-8 c | 7.4125354488478 × 10-8 c | 7.5051921419584 × 10-8 c | 7.597848835069 × 10-8 c | 7.6905055281796 × 10-8 c | 7.7831622212902 × 10-8 c | 7.8758189144008 × 10-8 c | 7.9684756075114 × 10-8 c | 8.061132300622 × 10-8 c | 8.1537889937326 × 10-8 c | 8.2464456868432 × 10-8 c | 8.3391023799538 × 10-8 c | 8.4317590730644 × 10-8 c | 8.524415766175 × 10-8 c | 8.6170724592856 × 10-8 c | 8.7097291523962 × 10-8 c | 8.8023858455068 × 10-8 c | 8.8950425386174 × 10-8 c | 8.987699231728 × 10-8 c | 9.0803559248386 × 10-8 c | 9.1730126179492 × 10-8 c | 9.2656693110598 × 10-8 c |
The kilometre per hour (American English: kilometer per hour) is a unit of speed, expressing the number of kilometres travelled in one hour.
| 1 kilometers per hour = 9.2656693110598E-10 speed of lights | 6 kilometers per hour = 5.5594015866359E-9 speed of lights |
| 2 kilometers per hour = 1.853133862212E-9 speed of lights | 7 kilometers per hour = 6.4859685177418E-9 speed of lights |
| 3 kilometers per hour = 2.7797007933179E-9 speed of lights | 8 kilometers per hour = 7.4125354488478E-9 speed of lights |
| 4 kilometers per hour = 3.7062677244239E-9 speed of lights | 9 kilometers per hour = 8.3391023799538E-9 speed of lights |
| 5 kilometers per hour = 4.6328346555299E-9 speed of lights | 10 kilometers per hour = 9.2656693110598E-9 speed of lights |
The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is 299,792,458 metres per second (approximately 3.00×108 m/s, or 186,282 mi/s); it is exact because the unit of length, the metre, is defined from this constant and the international standard for time.
| 1 speed of lights = 1079252848.8 kilometers per hour | 6 speed of lights = 6475517092.8 kilometers per hour |
| 2 speed of lights = 2158505697.6 kilometers per hour | 7 speed of lights = 7554769941.6 kilometers per hour |
| 3 speed of lights = 3237758546.4 kilometers per hour | 8 speed of lights = 8634022790.4 kilometers per hour |
| 4 speed of lights = 4317011395.2 kilometers per hour | 9 speed of lights = 9713275639.2 kilometers per hour |
| 5 speed of lights = 5396264244 kilometers per hour | 10 speed of lights = 10792528488 kilometers per hour |
| 1 kilometers per hour = 9.2656693110598 × 10-10 speed of lights |
| 1 speed of lights = 1,079,252,848.8 kilometers per hour |