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.
Inches per hour (iph) might seem like a peculiar unit of speed, but it plays a critical role in specific fields such as meteorology and engineering. This unit is often employed to measure precipitation rates, as it provides a precise gauge for predicting flooding events and soil absorption rates. By understanding precipitation in inches per hour, meteorologists can issue timely warnings and help communities prepare for extreme weather conditions.
Beyond weather, inches per hour can also be significant in manufacturing. For instance, when a machine needs to move with precision while applying adhesives or paints, the speed may be calibrated in iph to ensure accurate application and quality control. It’s a reminder of how even seemingly simple units have complex and vital applications across various industries.
Miles per hour | Inches per hour |
---|---|
0
mph
|
0
in/h
|
2
mph
|
126742.71229
in/h
|
4
mph
|
253485.42459
in/h
|
6
mph
|
380228.13688
in/h
|
8
mph
|
506970.84918
in/h
|
10
mph
|
633713.56147
in/h
|
12
mph
|
760456.27376
in/h
|
14
mph
|
887198.98606
in/h
|
16
mph
|
1013941.69835
in/h
|
18
mph
|
1140684.41065
in/h
|
20
mph
|
1267427.12294
in/h
|
22
mph
|
1394169.83523
in/h
|
24
mph
|
1520912.54753
in/h
|
26
mph
|
1647655.25982
in/h
|
28
mph
|
1774397.97212
in/h
|
30
mph
|
1901140.68441
in/h
|
32
mph
|
2027883.3967
in/h
|
34
mph
|
2154626.109
in/h
|
36
mph
|
2281368.82129
in/h
|
38
mph
|
2408111.53359
in/h
|
40
mph
|
2534854.24588
in/h
|
42
mph
|
2661596.95817
in/h
|
44
mph
|
2788339.67047
in/h
|
46
mph
|
2915082.38276
in/h
|
48
mph
|
3041825.09506
in/h
|
50
mph
|
3168567.80735
in/h
|
52
mph
|
3295310.51965
in/h
|
54
mph
|
3422053.23194
in/h
|
56
mph
|
3548795.94423
in/h
|
58
mph
|
3675538.65653
in/h
|
60
mph
|
3802281.36882
in/h
|
62
mph
|
3929024.08112
in/h
|
64
mph
|
4055766.79341
in/h
|
66
mph
|
4182509.5057
in/h
|
68
mph
|
4309252.218
in/h
|
70
mph
|
4435994.93029
in/h
|
72
mph
|
4562737.64259
in/h
|
74
mph
|
4689480.35488
in/h
|
76
mph
|
4816223.06717
in/h
|
78
mph
|
4942965.77947
in/h
|
80
mph
|
5069708.49176
in/h
|
82
mph
|
5196451.20406
in/h
|
84
mph
|
5323193.91635
in/h
|
86
mph
|
5449936.62864
in/h
|
88
mph
|
5576679.34094
in/h
|
90
mph
|
5703422.05323
in/h
|
92
mph
|
5830164.76553
in/h
|
94
mph
|
5956907.47782
in/h
|
96
mph
|
6083650.19011
in/h
|
98
mph
|
6210392.90241
in/h
|
100
mph
|
6337135.6147
in/h
|
102
mph
|
6463878.327
in/h
|
104
mph
|
6590621.03929
in/h
|
106
mph
|
6717363.75158
in/h
|
108
mph
|
6844106.46388
in/h
|
110
mph
|
6970849.17617
in/h
|
112
mph
|
7097591.88847
in/h
|
114
mph
|
7224334.60076
in/h
|
116
mph
|
7351077.31305
in/h
|
118
mph
|
7477820.02535
in/h
|
120
mph
|
7604562.73764
in/h
|
122
mph
|
7731305.44994
in/h
|
124
mph
|
7858048.16223
in/h
|
126
mph
|
7984790.87452
in/h
|
128
mph
|
8111533.58682
in/h
|
130
mph
|
8238276.29911
in/h
|
132
mph
|
8365019.01141
in/h
|
134
mph
|
8491761.7237
in/h
|
136
mph
|
8618504.43599
in/h
|
138
mph
|
8745247.14829
in/h
|
140
mph
|
8871989.86058
in/h
|
142
mph
|
8998732.57288
in/h
|
144
mph
|
9125475.28517
in/h
|
146
mph
|
9252217.99747
in/h
|
148
mph
|
9378960.70976
in/h
|
150
mph
|
9505703.42205
in/h
|
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