| mile per hour | 1 mph | 2 mph | 3 mph | 4 mph | 5 mph | 6 mph | 7 mph | 8 mph | 9 mph | 10 mph | 11 mph | 12 mph | 13 mph | 14 mph | 15 mph | 16 mph | 17 mph | 18 mph | 19 mph | 20 mph | 21 mph | 22 mph | 23 mph | 24 mph | 25 mph | 26 mph | 27 mph | 28 mph | 29 mph | 30 mph | 31 mph | 32 mph | 33 mph | 34 mph | 35 mph | 36 mph | 37 mph | 38 mph | 39 mph | 40 mph | 41 mph | 42 mph | 43 mph | 44 mph | 45 mph | 46 mph | 47 mph | 48 mph | 49 mph | 50 mph | 51 mph | 52 mph | 53 mph | 54 mph | 55 mph | 56 mph | 57 mph | 58 mph | 59 mph | 60 mph | 61 mph | 62 mph | 63 mph | 64 mph | 65 mph | 66 mph | 67 mph | 68 mph | 69 mph | 70 mph | 71 mph | 72 mph | 73 mph | 74 mph | 75 mph | 76 mph | 77 mph | 78 mph | 79 mph | 80 mph | 81 mph | 82 mph | 83 mph | 84 mph | 85 mph | 86 mph | 87 mph | 88 mph | 89 mph | 90 mph | 91 mph | 92 mph | 93 mph | 94 mph | 95 mph | 96 mph | 97 mph | 98 mph | 99 mph | 100 mph |
| speed of light | 1.4911649311738 × 10-9 c | 2.9823298623476 × 10-9 c | 4.4734947935215 × 10-9 c | 5.9646597246953 × 10-9 c | 7.4558246558691 × 10-9 c | 8.9469895870429 × 10-9 c | 1.0438154518217 × 10-8 c | 1.1929319449391 × 10-8 c | 1.3420484380564 × 10-8 c | 1.4911649311738 × 10-8 c | 1.6402814242912 × 10-8 c | 1.7893979174086 × 10-8 c | 1.938514410526 × 10-8 c | 2.0876309036433 × 10-8 c | 2.2367473967607 × 10-8 c | 2.3858638898781 × 10-8 c | 2.5349803829955 × 10-8 c | 2.6840968761129 × 10-8 c | 2.8332133692303 × 10-8 c | 2.9823298623476 × 10-8 c | 3.131446355465 × 10-8 c | 3.2805628485824 × 10-8 c | 3.4296793416998 × 10-8 c | 3.5787958348172 × 10-8 c | 3.7279123279345 × 10-8 c | 3.8770288210519 × 10-8 c | 4.0261453141693 × 10-8 c | 4.1752618072867 × 10-8 c | 4.3243783004041 × 10-8 c | 4.4734947935215 × 10-8 c | 4.6226112866388 × 10-8 c | 4.7717277797562 × 10-8 c | 4.9208442728736 × 10-8 c | 5.069960765991 × 10-8 c | 5.2190772591084 × 10-8 c | 5.3681937522257 × 10-8 c | 5.5173102453431 × 10-8 c | 5.6664267384605 × 10-8 c | 5.8155432315779 × 10-8 c | 5.9646597246953 × 10-8 c | 6.1137762178127 × 10-8 c | 6.26289271093 × 10-8 c | 6.4120092040474 × 10-8 c | 6.5611256971648 × 10-8 c | 6.7102421902822 × 10-8 c | 6.8593586833996 × 10-8 c | 7.0084751765169 × 10-8 c | 7.1575916696343 × 10-8 c | 7.3067081627517 × 10-8 c | 7.4558246558691 × 10-8 c | 7.6049411489865 × 10-8 c | 7.7540576421039 × 10-8 c | 7.9031741352212 × 10-8 c | 8.0522906283386 × 10-8 c | 8.201407121456 × 10-8 c | 8.3505236145734 × 10-8 c | 8.4996401076908 × 10-8 c | 8.6487566008081 × 10-8 c | 8.7978730939255 × 10-8 c | 8.9469895870429 × 10-8 c | 9.0961060801603 × 10-8 c | 9.2452225732777 × 10-8 c | 9.3943390663951 × 10-8 c | 9.5434555595124 × 10-8 c | 9.6925720526298 × 10-8 c | 9.8416885457472 × 10-8 c | 9.9908050388646 × 10-8 c | 1.0139921531982 × 10-7 c | 1.0289038025099 × 10-7 c | 1.0438154518217 × 10-7 c | 1.0587271011334 × 10-7 c | 1.0736387504451 × 10-7 c | 1.0885503997569 × 10-7 c | 1.1034620490686 × 10-7 c | 1.1183736983804 × 10-7 c | 1.1332853476921 × 10-7 c | 1.1481969970038 × 10-7 c | 1.1631086463156 × 10-7 c | 1.1780202956273 × 10-7 c | 1.1929319449391 × 10-7 c | 1.2078435942508 × 10-7 c | 1.2227552435625 × 10-7 c | 1.2376668928743 × 10-7 c | 1.252578542186 × 10-7 c | 1.2674901914977 × 10-7 c | 1.2824018408095 × 10-7 c | 1.2973134901212 × 10-7 c | 1.312225139433 × 10-7 c | 1.3271367887447 × 10-7 c | 1.3420484380564 × 10-7 c | 1.3569600873682 × 10-7 c | 1.3718717366799 × 10-7 c | 1.3867833859917 × 10-7 c | 1.4016950353034 × 10-7 c | 1.4166066846151 × 10-7 c | 1.4315183339269 × 10-7 c | 1.4464299832386 × 10-7 c | 1.4613416325503 × 10-7 c | 1.4762532818621 × 10-7 c | 1.4911649311738 × 10-7 c |
Miles per hour (abbreviated mph, MPH or mi/h) is an imperial and United States customary unit of speed expressing the number of statute miles covered in one hour. Although kilometres per hour is now the most widely used measure of speed, miles per hour remains the standard unit for speed limits in the United States, the United Kingdom, Antigua & Barbuda and Puerto Rico, although the latter two use kilometres for long distances.
| 1 miles per hour = 1.4911649311738E-9 speed of lights | 6 miles per hour = 8.9469895870429E-9 speed of lights |
| 2 miles per hour = 2.9823298623476E-9 speed of lights | 7 miles per hour = 1.0438154518217E-8 speed of lights |
| 3 miles per hour = 4.4734947935215E-9 speed of lights | 8 miles per hour = 1.1929319449391E-8 speed of lights |
| 4 miles per hour = 5.9646597246953E-9 speed of lights | 9 miles per hour = 1.3420484380564E-8 speed of lights |
| 5 miles per hour = 7.4558246558691E-9 speed of lights | 10 miles per hour = 1.4911649311738E-8 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 = 670616629.3844 miles per hour | 6 speed of lights = 4023699776.3064 miles per hour |
| 2 speed of lights = 1341233258.7688 miles per hour | 7 speed of lights = 4694316405.6908 miles per hour |
| 3 speed of lights = 2011849888.1532 miles per hour | 8 speed of lights = 5364933035.0752 miles per hour |
| 4 speed of lights = 2682466517.5376 miles per hour | 9 speed of lights = 6035549664.4596 miles per hour |
| 5 speed of lights = 3353083146.922 miles per hour | 10 speed of lights = 6706166293.844 miles per hour |
| 1 miles per hour = 1.4911649311738 × 10-9 speed of lights |
| 1 speed of lights = 670,616,629.3844 miles per hour |