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.
Cubic meters per second (m³/s) is a compelling unit of measurement, primarily used to quantify the flow rate of liquid or gas. Often seen in the context of hydrology, it is crucial for understanding river discharges and the functioning of large-scale water supply systems. For instance, the Amazon River, the largest by discharge volume of water, has an average flow rate of about 209,000 m³/s. This sheer volume of water is equivalent to filling over 83 Olympic-size swimming pools every second!
In engineering, m³/s can determine the capacity of HVAC systems or the ventilation needs in building designs, especially in projects requiring meticulous climate control. Understanding flow rates in m³/s aids in improving efficiency across industries, ensuring resources are utilized effectively, and maintaining ecological balance in natural water bodies.
Cubic feet per second | Cubic meters per second |
---|---|
0
ft³/s
|
0
m³/s
|
1
ft³/s
|
0.0283168
m³/s
|
2
ft³/s
|
0.0566337
m³/s
|
3
ft³/s
|
0.0849505
m³/s
|
4
ft³/s
|
0.113267
m³/s
|
5
ft³/s
|
0.141584
m³/s
|
6
ft³/s
|
0.169901
m³/s
|
7
ft³/s
|
0.198218
m³/s
|
8
ft³/s
|
0.226535
m³/s
|
9
ft³/s
|
0.254851
m³/s
|
10
ft³/s
|
0.283168
m³/s
|
11
ft³/s
|
0.311485
m³/s
|
12
ft³/s
|
0.339802
m³/s
|
13
ft³/s
|
0.368119
m³/s
|
14
ft³/s
|
0.396436
m³/s
|
15
ft³/s
|
0.424752
m³/s
|
16
ft³/s
|
0.453069
m³/s
|
17
ft³/s
|
0.481386
m³/s
|
18
ft³/s
|
0.509703
m³/s
|
19
ft³/s
|
0.53802
m³/s
|
20
ft³/s
|
0.566337
m³/s
|
21
ft³/s
|
0.594653
m³/s
|
22
ft³/s
|
0.62297
m³/s
|
23
ft³/s
|
0.651287
m³/s
|
24
ft³/s
|
0.679604
m³/s
|
25
ft³/s
|
0.707921
m³/s
|
26
ft³/s
|
0.736238
m³/s
|
27
ft³/s
|
0.764554
m³/s
|
28
ft³/s
|
0.792871
m³/s
|
29
ft³/s
|
0.821188
m³/s
|
30
ft³/s
|
0.849505
m³/s
|
31
ft³/s
|
0.877822
m³/s
|
32
ft³/s
|
0.906139
m³/s
|
33
ft³/s
|
0.934455
m³/s
|
34
ft³/s
|
0.962772
m³/s
|
35
ft³/s
|
0.991089
m³/s
|
36
ft³/s
|
1.01941
m³/s
|
37
ft³/s
|
1.04772
m³/s
|
38
ft³/s
|
1.07604
m³/s
|
39
ft³/s
|
1.10436
m³/s
|
40
ft³/s
|
1.13267
m³/s
|
41
ft³/s
|
1.16099
m³/s
|
42
ft³/s
|
1.18931
m³/s
|
43
ft³/s
|
1.21762
m³/s
|
44
ft³/s
|
1.24594
m³/s
|
45
ft³/s
|
1.27426
m³/s
|
46
ft³/s
|
1.30257
m³/s
|
47
ft³/s
|
1.33089
m³/s
|
48
ft³/s
|
1.35921
m³/s
|
49
ft³/s
|
1.38752
m³/s
|
50
ft³/s
|
1.41584
m³/s
|
51
ft³/s
|
1.44416
m³/s
|
52
ft³/s
|
1.47248
m³/s
|
53
ft³/s
|
1.50079
m³/s
|
54
ft³/s
|
1.52911
m³/s
|
55
ft³/s
|
1.55743
m³/s
|
56
ft³/s
|
1.58574
m³/s
|
57
ft³/s
|
1.61406
m³/s
|
58
ft³/s
|
1.64238
m³/s
|
59
ft³/s
|
1.67069
m³/s
|
60
ft³/s
|
1.69901
m³/s
|
61
ft³/s
|
1.72733
m³/s
|
62
ft³/s
|
1.75564
m³/s
|
63
ft³/s
|
1.78396
m³/s
|
64
ft³/s
|
1.81228
m³/s
|
65
ft³/s
|
1.84059
m³/s
|
66
ft³/s
|
1.86891
m³/s
|
67
ft³/s
|
1.89723
m³/s
|
68
ft³/s
|
1.92554
m³/s
|
69
ft³/s
|
1.95386
m³/s
|
70
ft³/s
|
1.98218
m³/s
|
71
ft³/s
|
2.0105
m³/s
|
72
ft³/s
|
2.03881
m³/s
|
73
ft³/s
|
2.06713
m³/s
|
74
ft³/s
|
2.09545
m³/s
|
75
ft³/s
|
2.12376
m³/s
|
76
ft³/s
|
2.15208
m³/s
|
77
ft³/s
|
2.1804
m³/s
|
78
ft³/s
|
2.20871
m³/s
|
79
ft³/s
|
2.23703
m³/s
|
80
ft³/s
|
2.26535
m³/s
|
81
ft³/s
|
2.29366
m³/s
|
82
ft³/s
|
2.32198
m³/s
|
83
ft³/s
|
2.3503
m³/s
|
84
ft³/s
|
2.37861
m³/s
|
85
ft³/s
|
2.40693
m³/s
|
86
ft³/s
|
2.43525
m³/s
|
87
ft³/s
|
2.46356
m³/s
|
88
ft³/s
|
2.49188
m³/s
|
89
ft³/s
|
2.5202
m³/s
|
90
ft³/s
|
2.54851
m³/s
|
91
ft³/s
|
2.57683
m³/s
|
92
ft³/s
|
2.60515
m³/s
|
93
ft³/s
|
2.63347
m³/s
|
94
ft³/s
|
2.66178
m³/s
|
95
ft³/s
|
2.6901
m³/s
|
96
ft³/s
|
2.71842
m³/s
|
97
ft³/s
|
2.74673
m³/s
|
98
ft³/s
|
2.77505
m³/s
|
99
ft³/s
|
2.80337
m³/s
|
100
ft³/s
|
2.83168
m³/s
|
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