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 foot per hour is a unit of volumetric flow rate, measuring how much volume flows through a system per hour. While you might not think about it daily, this unit plays a crucial role in sectors like natural gas distribution and HVAC systems, where precise measurement of air or fluid flow is essential for efficiency and safety. Interestingly, in the U.S., a substantial portion of homes rely on natural gas, and understanding its flow in cubic feet per hour can optimize household energy usage and reduce carbon footprints.
Moreover, recognizing changes in flow rates measured in cubic feet per hour can be an indicator of system inefficiencies or leaks, prompting timely maintenance and ensuring operational efficacy. This unit is a key player behind the scenes in ensuring that systems run smoothly and resources aren’t wasted.
Cubic feet per second | Cubic feet per hour |
---|---|
0
ft³/s
|
0
ft³/h
|
1
ft³/s
|
3600
ft³/h
|
2
ft³/s
|
7200
ft³/h
|
3
ft³/s
|
10800
ft³/h
|
4
ft³/s
|
14400
ft³/h
|
5
ft³/s
|
18000
ft³/h
|
6
ft³/s
|
21600
ft³/h
|
7
ft³/s
|
25200
ft³/h
|
8
ft³/s
|
28800
ft³/h
|
9
ft³/s
|
32400
ft³/h
|
10
ft³/s
|
36000
ft³/h
|
11
ft³/s
|
39600
ft³/h
|
12
ft³/s
|
43200
ft³/h
|
13
ft³/s
|
46800
ft³/h
|
14
ft³/s
|
50400
ft³/h
|
15
ft³/s
|
54000
ft³/h
|
16
ft³/s
|
57600
ft³/h
|
17
ft³/s
|
61200
ft³/h
|
18
ft³/s
|
64800
ft³/h
|
19
ft³/s
|
68400
ft³/h
|
20
ft³/s
|
72000
ft³/h
|
21
ft³/s
|
75600
ft³/h
|
22
ft³/s
|
79200
ft³/h
|
23
ft³/s
|
82800
ft³/h
|
24
ft³/s
|
86400
ft³/h
|
25
ft³/s
|
90000
ft³/h
|
26
ft³/s
|
93600
ft³/h
|
27
ft³/s
|
97200
ft³/h
|
28
ft³/s
|
100800
ft³/h
|
29
ft³/s
|
104400
ft³/h
|
30
ft³/s
|
108000
ft³/h
|
31
ft³/s
|
111600
ft³/h
|
32
ft³/s
|
115200
ft³/h
|
33
ft³/s
|
118800
ft³/h
|
34
ft³/s
|
122400
ft³/h
|
35
ft³/s
|
126000
ft³/h
|
36
ft³/s
|
129600
ft³/h
|
37
ft³/s
|
133200
ft³/h
|
38
ft³/s
|
136800
ft³/h
|
39
ft³/s
|
140400
ft³/h
|
40
ft³/s
|
144000
ft³/h
|
41
ft³/s
|
147600
ft³/h
|
42
ft³/s
|
151200
ft³/h
|
43
ft³/s
|
154800
ft³/h
|
44
ft³/s
|
158400
ft³/h
|
45
ft³/s
|
162000
ft³/h
|
46
ft³/s
|
165600
ft³/h
|
47
ft³/s
|
169200
ft³/h
|
48
ft³/s
|
172800
ft³/h
|
49
ft³/s
|
176400
ft³/h
|
50
ft³/s
|
180000
ft³/h
|
51
ft³/s
|
183600
ft³/h
|
52
ft³/s
|
187200
ft³/h
|
53
ft³/s
|
190800
ft³/h
|
54
ft³/s
|
194400
ft³/h
|
55
ft³/s
|
198000
ft³/h
|
56
ft³/s
|
201600
ft³/h
|
57
ft³/s
|
205200
ft³/h
|
58
ft³/s
|
208800
ft³/h
|
59
ft³/s
|
212400
ft³/h
|
60
ft³/s
|
216000
ft³/h
|
61
ft³/s
|
219600
ft³/h
|
62
ft³/s
|
223200
ft³/h
|
63
ft³/s
|
226800
ft³/h
|
64
ft³/s
|
230400
ft³/h
|
65
ft³/s
|
234000
ft³/h
|
66
ft³/s
|
237600
ft³/h
|
67
ft³/s
|
241200
ft³/h
|
68
ft³/s
|
244800
ft³/h
|
69
ft³/s
|
248400
ft³/h
|
70
ft³/s
|
252000
ft³/h
|
71
ft³/s
|
255600
ft³/h
|
72
ft³/s
|
259200
ft³/h
|
73
ft³/s
|
262800
ft³/h
|
74
ft³/s
|
266400
ft³/h
|
75
ft³/s
|
270000
ft³/h
|
76
ft³/s
|
273600
ft³/h
|
77
ft³/s
|
277200
ft³/h
|
78
ft³/s
|
280800
ft³/h
|
79
ft³/s
|
284400
ft³/h
|
80
ft³/s
|
288000
ft³/h
|
81
ft³/s
|
291600
ft³/h
|
82
ft³/s
|
295200
ft³/h
|
83
ft³/s
|
298800
ft³/h
|
84
ft³/s
|
302400
ft³/h
|
85
ft³/s
|
306000
ft³/h
|
86
ft³/s
|
309600
ft³/h
|
87
ft³/s
|
313200
ft³/h
|
88
ft³/s
|
316800
ft³/h
|
89
ft³/s
|
320400
ft³/h
|
90
ft³/s
|
324000
ft³/h
|
91
ft³/s
|
327600
ft³/h
|
92
ft³/s
|
331200
ft³/h
|
93
ft³/s
|
334800
ft³/h
|
94
ft³/s
|
338400
ft³/h
|
95
ft³/s
|
342000
ft³/h
|
96
ft³/s
|
345600
ft³/h
|
97
ft³/s
|
349200
ft³/h
|
98
ft³/s
|
352800
ft³/h
|
99
ft³/s
|
356400
ft³/h
|
100
ft³/s
|
360000
ft³/h
|
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