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 quart per second is a unit typically used to measure flow rate, and it might seem a little unusual in everyday conversations. To put it in perspective, one quart per second is equivalent to the flow of nearly a gallon of liquid in just four seconds, showcasing its impressive speed for handling liquids. This unit is particularly useful in industrial settings, where understanding and controlling the rate of flow for substances like oil, water, or chemicals is crucial for efficiency and safety.
Interestingly, the quart has its roots in ancient measuring systems and is based on the Latin word “quartus,” meaning “fourth.” This highlights its historical significance, as early civilizations often used fractions of larger units to precisely measure goods. Whether you’re filling a swimming pool or calibrating a scientific experiment, a high flow rate such as quarts per second can indicate a significant and high-speed transfer of liquid.
Cubic feet per minute | Quarts per second |
---|---|
0
ft³/min
|
0
qt/s
|
10
ft³/min
|
4.98701
qt/s
|
20
ft³/min
|
9.97402
qt/s
|
30
ft³/min
|
14.96103
qt/s
|
40
ft³/min
|
19.94804
qt/s
|
50
ft³/min
|
24.93505
qt/s
|
60
ft³/min
|
29.92206
qt/s
|
70
ft³/min
|
34.90907
qt/s
|
80
ft³/min
|
39.89608
qt/s
|
90
ft³/min
|
44.88309
qt/s
|
100
ft³/min
|
49.8701
qt/s
|
110
ft³/min
|
54.85711
qt/s
|
120
ft³/min
|
59.84413
qt/s
|
130
ft³/min
|
64.83114
qt/s
|
140
ft³/min
|
69.81815
qt/s
|
150
ft³/min
|
74.80516
qt/s
|
160
ft³/min
|
79.79217
qt/s
|
170
ft³/min
|
84.77918
qt/s
|
180
ft³/min
|
89.76619
qt/s
|
190
ft³/min
|
94.7532
qt/s
|
200
ft³/min
|
99.74021
qt/s
|
210
ft³/min
|
104.72722
qt/s
|
220
ft³/min
|
109.71423
qt/s
|
230
ft³/min
|
114.70124
qt/s
|
240
ft³/min
|
119.68825
qt/s
|
250
ft³/min
|
124.67526
qt/s
|
260
ft³/min
|
129.66227
qt/s
|
270
ft³/min
|
134.64928
qt/s
|
280
ft³/min
|
139.63629
qt/s
|
290
ft³/min
|
144.6233
qt/s
|
300
ft³/min
|
149.61031
qt/s
|
310
ft³/min
|
154.59732
qt/s
|
320
ft³/min
|
159.58433
qt/s
|
330
ft³/min
|
164.57134
qt/s
|
340
ft³/min
|
169.55835
qt/s
|
350
ft³/min
|
174.54536
qt/s
|
360
ft³/min
|
179.53238
qt/s
|
370
ft³/min
|
184.51939
qt/s
|
380
ft³/min
|
189.5064
qt/s
|
390
ft³/min
|
194.49341
qt/s
|
400
ft³/min
|
199.48042
qt/s
|
410
ft³/min
|
204.46743
qt/s
|
420
ft³/min
|
209.45444
qt/s
|
430
ft³/min
|
214.44145
qt/s
|
440
ft³/min
|
219.42846
qt/s
|
450
ft³/min
|
224.41547
qt/s
|
460
ft³/min
|
229.40248
qt/s
|
470
ft³/min
|
234.38949
qt/s
|
480
ft³/min
|
239.3765
qt/s
|
490
ft³/min
|
244.36351
qt/s
|
500
ft³/min
|
249.35052
qt/s
|
510
ft³/min
|
254.33753
qt/s
|
520
ft³/min
|
259.32454
qt/s
|
530
ft³/min
|
264.31155
qt/s
|
540
ft³/min
|
269.29856
qt/s
|
550
ft³/min
|
274.28557
qt/s
|
560
ft³/min
|
279.27258
qt/s
|
570
ft³/min
|
284.25959
qt/s
|
580
ft³/min
|
289.2466
qt/s
|
590
ft³/min
|
294.23361
qt/s
|
600
ft³/min
|
299.22063
qt/s
|
610
ft³/min
|
304.20764
qt/s
|
620
ft³/min
|
309.19465
qt/s
|
630
ft³/min
|
314.18166
qt/s
|
640
ft³/min
|
319.16867
qt/s
|
650
ft³/min
|
324.15568
qt/s
|
660
ft³/min
|
329.14269
qt/s
|
670
ft³/min
|
334.1297
qt/s
|
680
ft³/min
|
339.11671
qt/s
|
690
ft³/min
|
344.10372
qt/s
|
700
ft³/min
|
349.09073
qt/s
|
710
ft³/min
|
354.07774
qt/s
|
720
ft³/min
|
359.06475
qt/s
|
730
ft³/min
|
364.05176
qt/s
|
740
ft³/min
|
369.03877
qt/s
|
750
ft³/min
|
374.02578
qt/s
|
760
ft³/min
|
379.01279
qt/s
|
770
ft³/min
|
384
qt/s
|
780
ft³/min
|
388.98681
qt/s
|
790
ft³/min
|
393.97382
qt/s
|
800
ft³/min
|
398.96083
qt/s
|
810
ft³/min
|
403.94784
qt/s
|
820
ft³/min
|
408.93485
qt/s
|
830
ft³/min
|
413.92186
qt/s
|
840
ft³/min
|
418.90888
qt/s
|
850
ft³/min
|
423.89589
qt/s
|
860
ft³/min
|
428.8829
qt/s
|
870
ft³/min
|
433.86991
qt/s
|
880
ft³/min
|
438.85692
qt/s
|
890
ft³/min
|
443.84393
qt/s
|
900
ft³/min
|
448.83094
qt/s
|
910
ft³/min
|
453.81795
qt/s
|
920
ft³/min
|
458.80496
qt/s
|
930
ft³/min
|
463.79197
qt/s
|
940
ft³/min
|
468.77898
qt/s
|
950
ft³/min
|
473.76599
qt/s
|
960
ft³/min
|
478.753
qt/s
|
970
ft³/min
|
483.74001
qt/s
|
980
ft³/min
|
488.72702
qt/s
|
990
ft³/min
|
493.71403
qt/s
|
1000
ft³/min
|
498.70104
qt/s
|
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