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.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
mile per hour | mph | ≡ 1 mi/h | = 0.44704 m/s | Imperial/US |
miles per hour | speed of lights | miles per hour | speed of lights |
---|---|---|---|
1 | = 1.4911649311738E-9 | 6 | = 8.9469895870429E-9 |
2 | = 2.9823298623476E-9 | 7 | = 1.0438154518217E-8 |
3 | = 4.4734947935215E-9 | 8 | = 1.1929319449391E-8 |
4 | = 5.9646597246953E-9 | 9 | = 1.3420484380564E-8 |
5 | = 7.4558246558691E-9 | 10 | = 1.4911649311738E-8 |
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.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
speed of light | c | ≡ 299792458 m/s | = 299792458 m/s | Other Speed |
speed of lights | miles per hour | speed of lights | miles per hour |
---|---|---|---|
1 | = 670616629.3844 | 6 | = 4023699776.3064 |
2 | = 1341233258.7688 | 7 | = 4694316405.6908 |
3 | = 2011849888.1532 | 8 | = 5364933035.0752 |
4 | = 2682466517.5376 | 9 | = 6035549664.4596 |
5 | = 3353083146.922 | 10 | = 6706166293.844 |
miles per hour | speed of lights |
---|---|
1 | = 1.4911649311738 × 10-9 |
670,616,629.3844 | = 1 |
You can find the conversion in other languages in the following:
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |