A cubic foot per second (cfs) is a unit of flow rate that describes the volume of water or other fluids moving past a point every second. It is commonly used in hydrology to measure rivers and streams, providing insight into water availability and flood prediction. To put it in perspective, one cubic foot per second is equivalent to 7.48 gallons per second. Thus, a modest stream might flow at several tens of cfs, while larger rivers, such as the Mississippi, can exceed 500,000 cfs!
Interestingly, this unit has historical significance dating back to the early days of water management, where it played a crucial role in the development of infrastructure for agriculture and urban planning, influencing patterns of settlement and economic development around the world.
The cubic inch per second (in³/s) might seem like an obscure unit, but it plays a crucial role in various engineering and fluid dynamics applications. This unit measures volumetric flow rate, indicating how quickly a fluid moves through a system. While gallons or liters per minute might be more familiar, cubic inches per second offer precision in industries where small-scale fluid control is crucial, such as in microfluidics or precision-engineered machinery.
Intriguingly, the cubic inch, a prevalent measure in American automotive history, was key in defining engine sizes. Understanding flow rates in cubic inches per second can be vital when optimizing fuel or coolant systems in vintage cars. Its usage spans from classic car enthusiasts to cutting-edge technology in industrial systems, making it both historically significant and essential in modern engineering contexts.
Cubic feet per second | Cubic inches per second |
---|---|
0
ft³/s
|
0
in³/s
|
1
ft³/s
|
1728.00707
in³/s
|
2
ft³/s
|
3456.01415
in³/s
|
3
ft³/s
|
5184.02122
in³/s
|
4
ft³/s
|
6912.0283
in³/s
|
5
ft³/s
|
8640.03537
in³/s
|
6
ft³/s
|
10368.04245
in³/s
|
7
ft³/s
|
12096.04952
in³/s
|
8
ft³/s
|
13824.0566
in³/s
|
9
ft³/s
|
15552.06367
in³/s
|
10
ft³/s
|
17280.07074
in³/s
|
11
ft³/s
|
19008.07782
in³/s
|
12
ft³/s
|
20736.08489
in³/s
|
13
ft³/s
|
22464.09197
in³/s
|
14
ft³/s
|
24192.09904
in³/s
|
15
ft³/s
|
25920.10612
in³/s
|
16
ft³/s
|
27648.11319
in³/s
|
17
ft³/s
|
29376.12026
in³/s
|
18
ft³/s
|
31104.12734
in³/s
|
19
ft³/s
|
32832.13441
in³/s
|
20
ft³/s
|
34560.14149
in³/s
|
21
ft³/s
|
36288.14856
in³/s
|
22
ft³/s
|
38016.15564
in³/s
|
23
ft³/s
|
39744.16271
in³/s
|
24
ft³/s
|
41472.16979
in³/s
|
25
ft³/s
|
43200.17686
in³/s
|
26
ft³/s
|
44928.18393
in³/s
|
27
ft³/s
|
46656.19101
in³/s
|
28
ft³/s
|
48384.19808
in³/s
|
29
ft³/s
|
50112.20516
in³/s
|
30
ft³/s
|
51840.21223
in³/s
|
31
ft³/s
|
53568.21931
in³/s
|
32
ft³/s
|
55296.22638
in³/s
|
33
ft³/s
|
57024.23346
in³/s
|
34
ft³/s
|
58752.24053
in³/s
|
35
ft³/s
|
60480.2476
in³/s
|
36
ft³/s
|
62208.25468
in³/s
|
37
ft³/s
|
63936.26175
in³/s
|
38
ft³/s
|
65664.26883
in³/s
|
39
ft³/s
|
67392.2759
in³/s
|
40
ft³/s
|
69120.28298
in³/s
|
41
ft³/s
|
70848.29005
in³/s
|
42
ft³/s
|
72576.29713
in³/s
|
43
ft³/s
|
74304.3042
in³/s
|
44
ft³/s
|
76032.31127
in³/s
|
45
ft³/s
|
77760.31835
in³/s
|
46
ft³/s
|
79488.32542
in³/s
|
47
ft³/s
|
81216.3325
in³/s
|
48
ft³/s
|
82944.33957
in³/s
|
49
ft³/s
|
84672.34665
in³/s
|
50
ft³/s
|
86400.35372
in³/s
|
51
ft³/s
|
88128.36079
in³/s
|
52
ft³/s
|
89856.36787
in³/s
|
53
ft³/s
|
91584.37494
in³/s
|
54
ft³/s
|
93312.38202
in³/s
|
55
ft³/s
|
95040.38909
in³/s
|
56
ft³/s
|
96768.39617
in³/s
|
57
ft³/s
|
98496.40324
in³/s
|
58
ft³/s
|
100224.41032
in³/s
|
59
ft³/s
|
101952.41739
in³/s
|
60
ft³/s
|
103680.42446
in³/s
|
61
ft³/s
|
105408.43154
in³/s
|
62
ft³/s
|
107136.43861
in³/s
|
63
ft³/s
|
108864.44569
in³/s
|
64
ft³/s
|
110592.45276
in³/s
|
65
ft³/s
|
112320.45984
in³/s
|
66
ft³/s
|
114048.46691
in³/s
|
67
ft³/s
|
115776.47399
in³/s
|
68
ft³/s
|
117504.48106
in³/s
|
69
ft³/s
|
119232.48813
in³/s
|
70
ft³/s
|
120960.49521
in³/s
|
71
ft³/s
|
122688.50228
in³/s
|
72
ft³/s
|
124416.50936
in³/s
|
73
ft³/s
|
126144.51643
in³/s
|
74
ft³/s
|
127872.52351
in³/s
|
75
ft³/s
|
129600.53058
in³/s
|
76
ft³/s
|
131328.53765
in³/s
|
77
ft³/s
|
133056.54473
in³/s
|
78
ft³/s
|
134784.5518
in³/s
|
79
ft³/s
|
136512.55888
in³/s
|
80
ft³/s
|
138240.56595
in³/s
|
81
ft³/s
|
139968.57303
in³/s
|
82
ft³/s
|
141696.5801
in³/s
|
83
ft³/s
|
143424.58718
in³/s
|
84
ft³/s
|
145152.59425
in³/s
|
85
ft³/s
|
146880.60132
in³/s
|
86
ft³/s
|
148608.6084
in³/s
|
87
ft³/s
|
150336.61547
in³/s
|
88
ft³/s
|
152064.62255
in³/s
|
89
ft³/s
|
153792.62962
in³/s
|
90
ft³/s
|
155520.6367
in³/s
|
91
ft³/s
|
157248.64377
in³/s
|
92
ft³/s
|
158976.65085
in³/s
|
93
ft³/s
|
160704.65792
in³/s
|
94
ft³/s
|
162432.66499
in³/s
|
95
ft³/s
|
164160.67207
in³/s
|
96
ft³/s
|
165888.67914
in³/s
|
97
ft³/s
|
167616.68622
in³/s
|
98
ft³/s
|
169344.69329
in³/s
|
99
ft³/s
|
171072.70037
in³/s
|
100
ft³/s
|
172800.70744
in³/s
|
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