The mile per hour, commonly abbreviated as mph, is a unit of speed originating from the British imperial system and widely used in the United States and the United Kingdom. It’s fascinating to know that the concept of mph has historical significance dating back to the invention of the first automobiles in the late 19th century. The iconic cars of the 1920s, often called “classic cars,” were among the first to publicly advertise their capabilities in mph, including models like the Ford Model T, which had a top speed of about 45 mph.
Interestingly, mph is still the primary speed measurement unit for most road signage in countries such as the US and the UK, even while the rest of the world predominantly uses kilometers per hour (kph). The land-speed record attempts, including those made with the supersonic car “ThrustSSC,” which achieved an astonishing 763 mph in 1997, also emphasize the significance of this unit in measuring extreme speeds.
Metres per second (m/s) may seem inconspicuous, but it plays a critical role in understanding speed and velocity in scientific contexts. The unit underpins numerous fundamental concepts in physics and engineering, such as calculating the speed of sound at approximately 343 m/s in air at room temperature. This speed metric is also central to space exploration, where spacecraft velocity is often measured in meters per second to ensure precision in navigation and successful missions.
Beyond Earth, Jupiter’s moon, Io, erupts volcanic plumes that reach speeds of over 1,000 m/s, showcasing this unit’s application in celestial phenomena. Transitioning to daily life, elite athletes can clock speeds around 10 m/s during sprints, a testament to human capability. By providing a consistent metric, meters per second serves as a universal bridge across varied disciplines and contexts.
Miles per hour | Metres per second |
---|---|
0
mph
|
0
m/s
|
2
mph
|
0.89408
m/s
|
4
mph
|
1.78816
m/s
|
6
mph
|
2.68224
m/s
|
8
mph
|
3.57632
m/s
|
10
mph
|
4.4704
m/s
|
12
mph
|
5.36448
m/s
|
14
mph
|
6.25856
m/s
|
16
mph
|
7.15264
m/s
|
18
mph
|
8.04672
m/s
|
20
mph
|
8.9408
m/s
|
22
mph
|
9.83488
m/s
|
24
mph
|
10.72896
m/s
|
26
mph
|
11.62304
m/s
|
28
mph
|
12.51712
m/s
|
30
mph
|
13.4112
m/s
|
32
mph
|
14.30528
m/s
|
34
mph
|
15.19936
m/s
|
36
mph
|
16.09344
m/s
|
38
mph
|
16.98752
m/s
|
40
mph
|
17.8816
m/s
|
42
mph
|
18.77568
m/s
|
44
mph
|
19.66976
m/s
|
46
mph
|
20.56384
m/s
|
48
mph
|
21.45792
m/s
|
50
mph
|
22.352
m/s
|
52
mph
|
23.24608
m/s
|
54
mph
|
24.14016
m/s
|
56
mph
|
25.03424
m/s
|
58
mph
|
25.92832
m/s
|
60
mph
|
26.8224
m/s
|
62
mph
|
27.71648
m/s
|
64
mph
|
28.61056
m/s
|
66
mph
|
29.50464
m/s
|
68
mph
|
30.39872
m/s
|
70
mph
|
31.2928
m/s
|
72
mph
|
32.18688
m/s
|
74
mph
|
33.08096
m/s
|
76
mph
|
33.97504
m/s
|
78
mph
|
34.86912
m/s
|
80
mph
|
35.7632
m/s
|
82
mph
|
36.65728
m/s
|
84
mph
|
37.55136
m/s
|
86
mph
|
38.44544
m/s
|
88
mph
|
39.33952
m/s
|
90
mph
|
40.2336
m/s
|
92
mph
|
41.12768
m/s
|
94
mph
|
42.02176
m/s
|
96
mph
|
42.91584
m/s
|
98
mph
|
43.80992
m/s
|
100
mph
|
44.704
m/s
|
102
mph
|
45.59808
m/s
|
104
mph
|
46.49216
m/s
|
106
mph
|
47.38624
m/s
|
108
mph
|
48.28032
m/s
|
110
mph
|
49.1744
m/s
|
112
mph
|
50.06848
m/s
|
114
mph
|
50.96256
m/s
|
116
mph
|
51.85664
m/s
|
118
mph
|
52.75072
m/s
|
120
mph
|
53.6448
m/s
|
122
mph
|
54.53888
m/s
|
124
mph
|
55.43296
m/s
|
126
mph
|
56.32704
m/s
|
128
mph
|
57.22112
m/s
|
130
mph
|
58.1152
m/s
|
132
mph
|
59.00928
m/s
|
134
mph
|
59.90336
m/s
|
136
mph
|
60.79744
m/s
|
138
mph
|
61.69152
m/s
|
140
mph
|
62.5856
m/s
|
142
mph
|
63.47968
m/s
|
144
mph
|
64.37376
m/s
|
146
mph
|
65.26784
m/s
|
148
mph
|
66.16192
m/s
|
150
mph
|
67.056
m/s
|
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