Cubic foot per minute (CFM) is a unit that measures the flow rate of air and is widely used in various industries, from HVAC systems to automotive engineering. Understanding CFM is crucial for designing efficient ventilation systems, as it determines how much air is circulated within a specific space per minute. But did you know that the origins of measuring air flow date back to the early 20th century? Back then, engineers realized the need for standardized measurements to ensure optimal air quality and comfortable living conditions, which led to the popularization of CFM as a standard metric.
Remarkably, one cubic foot of air at room temperature weighs about 0.0807 pounds. With this knowledge, professionals can precisely calibrate systems to achieve desired airflow rates, maximize energy efficiency, and improve air quality. Whether managing the air systems in skyscrapers, homes, or cars, CFM remains a pivotal unit for ensuring environments stay fresh and healthy.
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 minute | Cubic inches per second |
---|---|
0
ft³/min
|
0
in³/s
|
10
ft³/min
|
288.00118
in³/s
|
20
ft³/min
|
576.00236
in³/s
|
30
ft³/min
|
864.00354
in³/s
|
40
ft³/min
|
1152.00472
in³/s
|
50
ft³/min
|
1440.0059
in³/s
|
60
ft³/min
|
1728.00707
in³/s
|
70
ft³/min
|
2016.00825
in³/s
|
80
ft³/min
|
2304.00943
in³/s
|
90
ft³/min
|
2592.01061
in³/s
|
100
ft³/min
|
2880.01179
in³/s
|
110
ft³/min
|
3168.01297
in³/s
|
120
ft³/min
|
3456.01415
in³/s
|
130
ft³/min
|
3744.01533
in³/s
|
140
ft³/min
|
4032.01651
in³/s
|
150
ft³/min
|
4320.01769
in³/s
|
160
ft³/min
|
4608.01887
in³/s
|
170
ft³/min
|
4896.02004
in³/s
|
180
ft³/min
|
5184.02122
in³/s
|
190
ft³/min
|
5472.0224
in³/s
|
200
ft³/min
|
5760.02358
in³/s
|
210
ft³/min
|
6048.02476
in³/s
|
220
ft³/min
|
6336.02594
in³/s
|
230
ft³/min
|
6624.02712
in³/s
|
240
ft³/min
|
6912.0283
in³/s
|
250
ft³/min
|
7200.02948
in³/s
|
260
ft³/min
|
7488.03066
in³/s
|
270
ft³/min
|
7776.03183
in³/s
|
280
ft³/min
|
8064.03301
in³/s
|
290
ft³/min
|
8352.03419
in³/s
|
300
ft³/min
|
8640.03537
in³/s
|
310
ft³/min
|
8928.03655
in³/s
|
320
ft³/min
|
9216.03773
in³/s
|
330
ft³/min
|
9504.03891
in³/s
|
340
ft³/min
|
9792.04009
in³/s
|
350
ft³/min
|
10080.04127
in³/s
|
360
ft³/min
|
10368.04245
in³/s
|
370
ft³/min
|
10656.04363
in³/s
|
380
ft³/min
|
10944.0448
in³/s
|
390
ft³/min
|
11232.04598
in³/s
|
400
ft³/min
|
11520.04716
in³/s
|
410
ft³/min
|
11808.04834
in³/s
|
420
ft³/min
|
12096.04952
in³/s
|
430
ft³/min
|
12384.0507
in³/s
|
440
ft³/min
|
12672.05188
in³/s
|
450
ft³/min
|
12960.05306
in³/s
|
460
ft³/min
|
13248.05424
in³/s
|
470
ft³/min
|
13536.05542
in³/s
|
480
ft³/min
|
13824.0566
in³/s
|
490
ft³/min
|
14112.05777
in³/s
|
500
ft³/min
|
14400.05895
in³/s
|
510
ft³/min
|
14688.06013
in³/s
|
520
ft³/min
|
14976.06131
in³/s
|
530
ft³/min
|
15264.06249
in³/s
|
540
ft³/min
|
15552.06367
in³/s
|
550
ft³/min
|
15840.06485
in³/s
|
560
ft³/min
|
16128.06603
in³/s
|
570
ft³/min
|
16416.06721
in³/s
|
580
ft³/min
|
16704.06839
in³/s
|
590
ft³/min
|
16992.06957
in³/s
|
600
ft³/min
|
17280.07074
in³/s
|
610
ft³/min
|
17568.07192
in³/s
|
620
ft³/min
|
17856.0731
in³/s
|
630
ft³/min
|
18144.07428
in³/s
|
640
ft³/min
|
18432.07546
in³/s
|
650
ft³/min
|
18720.07664
in³/s
|
660
ft³/min
|
19008.07782
in³/s
|
670
ft³/min
|
19296.079
in³/s
|
680
ft³/min
|
19584.08018
in³/s
|
690
ft³/min
|
19872.08136
in³/s
|
700
ft³/min
|
20160.08253
in³/s
|
710
ft³/min
|
20448.08371
in³/s
|
720
ft³/min
|
20736.08489
in³/s
|
730
ft³/min
|
21024.08607
in³/s
|
740
ft³/min
|
21312.08725
in³/s
|
750
ft³/min
|
21600.08843
in³/s
|
760
ft³/min
|
21888.08961
in³/s
|
770
ft³/min
|
22176.09079
in³/s
|
780
ft³/min
|
22464.09197
in³/s
|
790
ft³/min
|
22752.09315
in³/s
|
800
ft³/min
|
23040.09433
in³/s
|
810
ft³/min
|
23328.0955
in³/s
|
820
ft³/min
|
23616.09668
in³/s
|
830
ft³/min
|
23904.09786
in³/s
|
840
ft³/min
|
24192.09904
in³/s
|
850
ft³/min
|
24480.10022
in³/s
|
860
ft³/min
|
24768.1014
in³/s
|
870
ft³/min
|
25056.10258
in³/s
|
880
ft³/min
|
25344.10376
in³/s
|
890
ft³/min
|
25632.10494
in³/s
|
900
ft³/min
|
25920.10612
in³/s
|
910
ft³/min
|
26208.1073
in³/s
|
920
ft³/min
|
26496.10847
in³/s
|
930
ft³/min
|
26784.10965
in³/s
|
940
ft³/min
|
27072.11083
in³/s
|
950
ft³/min
|
27360.11201
in³/s
|
960
ft³/min
|
27648.11319
in³/s
|
970
ft³/min
|
27936.11437
in³/s
|
980
ft³/min
|
28224.11555
in³/s
|
990
ft³/min
|
28512.11673
in³/s
|
1000
ft³/min
|
28800.11791
in³/s
|
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