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 sound (32 °F) | 0.0013498 s | 0.0026995 s | 0.0040493 s | 0.0053990 s | 0.0067488 s | 0.0080986 s | 0.0094483 s | 0.0107981 s | 0.0121478 s | 0.0134976 s | 0.0148473 s | 0.0161971 s | 0.0175469 s | 0.0188966 s | 0.0202464 s | 0.0215961 s | 0.0229459 s | 0.0242957 s | 0.0256454 s | 0.0269952 s | 0.0283449 s | 0.0296947 s | 0.0310444 s | 0.0323942 s | 0.0337440 s | 0.0350937 s | 0.0364435 s | 0.0377932 s | 0.0391430 s | 0.0404928 s | 0.0418425 s | 0.0431923 s | 0.0445420 s | 0.0458918 s | 0.0472415 s | 0.0485913 s | 0.0499411 s | 0.0512908 s | 0.0526406 s | 0.0539903 s | 0.0553401 s | 0.0566899 s | 0.0580396 s | 0.0593894 s | 0.0607391 s | 0.0620889 s | 0.0634386 s | 0.0647884 s | 0.0661382 s | 0.0674879 s | 0.0688377 s | 0.0701874 s | 0.0715372 s | 0.0728870 s | 0.0742367 s | 0.0755865 s | 0.0769362 s | 0.0782860 s | 0.0796357 s | 0.0809855 s | 0.0823353 s | 0.0836850 s | 0.0850348 s | 0.0863845 s | 0.0877343 s | 0.0890841 s | 0.0904338 s | 0.0917836 s | 0.0931333 s | 0.0944831 s | 0.0958329 s | 0.0971826 s | 0.0985324 s | 0.0998821 s | 0.1012319 s | 0.1025816 s | 0.1039314 s | 0.1052812 s | 0.1066309 s | 0.1079807 s | 0.1093304 s | 0.1106802 s | 0.1120300 s | 0.1133797 s | 0.1147295 s | 0.1160792 s | 0.1174290 s | 0.1187787 s | 0.1201285 s | 0.1214783 s | 0.1228280 s | 0.1241778 s | 0.1255275 s | 0.1268773 s | 0.1282271 s | 0.1295768 s | 0.1309266 s | 0.1322763 s | 0.1336261 s | 0.1349758 s |
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 sounds (32 °F) | miles per hour | speed of sounds (32 °F) |
---|---|---|---|
1 | ≈ 0.0013497584541063 | 6 | ≈ 0.0080985507246377 |
2 | ≈ 0.0026995169082126 | 7 | ≈ 0.009448309178744 |
3 | ≈ 0.0040492753623188 | 8 | ≈ 0.01079806763285 |
4 | ≈ 0.0053990338164251 | 9 | ≈ 0.012147826086957 |
5 | ≈ 0.0067487922705314 | 10 | ≈ 0.013497584541063 |
The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium. In dry air at 0 °C (32 °F), the speed of sound is 331.2 metres per second (1,087 ft/s; 1,192 km/h; 741 mph; 644 kn). At 20 °C (68 °F), the speed of sound is 343 metres per second (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or a kilometre in 2.91 s or a mile in 4.69 s.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
speed of sound (32 °F) | s | 225 to 1062 km/h (761–660 mph or 661–574 kn) | ≈ 340 to 295 m/s | Other Speed |
speed of sounds (32 °F) | miles per hour | speed of sounds (32 °F) | miles per hour |
---|---|---|---|
1 | ≈ 740.87329992842 | 6 | ≈ 4445.2397995705 |
2 | ≈ 1481.7465998568 | 7 | ≈ 5186.1130994989 |
3 | ≈ 2222.6198997853 | 8 | ≈ 5926.9863994273 |
4 | ≈ 2963.4931997137 | 9 | ≈ 6667.8596993558 |
5 | ≈ 3704.3664996421 | 10 | ≈ 7408.7329992842 |
miles per hour | speed of sounds (32 °F) |
---|---|
1 | ≈ 0.0013498 |
740.8732999 | ≈ 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 …) |