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.
Gallon per minute (GPM) is a crucial unit in measuring flow rate, especially in the context of plumbing, irrigation, and various industrial applications. Originally rooted in the British Imperial system, the gallon has a rich history with variations across countries—such as the US liquid gallon, which is approximately 3.785 liters, and the UK gallon, which is around 4.546 liters. This means that when considering flow rates, the distinction between these gallons can lead to significant differences in calculation and application.
What’s particularly fascinating about GPM is its pivotal role in modern sustainability efforts. For example, showerheads in the United States are often rated by their GPM to help reduce water usage and promote conservation. Low-flow fixtures, which typically limit water flow to 2.5 GPM or less, have become a standard in reducing both water waste and energy costs, highlighting the intersection of environmental responsibility and engineering.
Quarts per second | Gallons per minute |
---|---|
0
qt/s
|
0
gal/min
|
0.5
qt/s
|
7.5
gal/min
|
1
qt/s
|
15
gal/min
|
1.5
qt/s
|
22.5
gal/min
|
2
qt/s
|
30
gal/min
|
2.5
qt/s
|
37.5
gal/min
|
3
qt/s
|
45
gal/min
|
3.5
qt/s
|
52.5
gal/min
|
4
qt/s
|
60
gal/min
|
4.5
qt/s
|
67.5
gal/min
|
5
qt/s
|
75
gal/min
|
5.5
qt/s
|
82.5
gal/min
|
6
qt/s
|
90
gal/min
|
6.5
qt/s
|
97.5
gal/min
|
7
qt/s
|
105
gal/min
|
7.5
qt/s
|
112.5
gal/min
|
8
qt/s
|
120
gal/min
|
8.5
qt/s
|
127.5
gal/min
|
9
qt/s
|
135
gal/min
|
9.5
qt/s
|
142.5
gal/min
|
10
qt/s
|
150
gal/min
|
10.5
qt/s
|
157.5
gal/min
|
11
qt/s
|
165
gal/min
|
11.5
qt/s
|
172.5
gal/min
|
12
qt/s
|
180
gal/min
|
12.5
qt/s
|
187.5
gal/min
|
13
qt/s
|
195
gal/min
|
13.5
qt/s
|
202.5
gal/min
|
14
qt/s
|
210
gal/min
|
14.5
qt/s
|
217.5
gal/min
|
15
qt/s
|
225
gal/min
|
15.5
qt/s
|
232.5
gal/min
|
16
qt/s
|
240
gal/min
|
16.5
qt/s
|
247.5
gal/min
|
17
qt/s
|
255
gal/min
|
17.5
qt/s
|
262.5
gal/min
|
18
qt/s
|
270
gal/min
|
18.5
qt/s
|
277.5
gal/min
|
19
qt/s
|
285
gal/min
|
19.5
qt/s
|
292.5
gal/min
|
20
qt/s
|
300
gal/min
|
20.5
qt/s
|
307.5
gal/min
|
21
qt/s
|
315
gal/min
|
21.5
qt/s
|
322.5
gal/min
|
22
qt/s
|
330
gal/min
|
22.5
qt/s
|
337.5
gal/min
|
23
qt/s
|
345
gal/min
|
23.5
qt/s
|
352.5
gal/min
|
24
qt/s
|
360
gal/min
|
24.5
qt/s
|
367.5
gal/min
|
25
qt/s
|
375
gal/min
|
25.5
qt/s
|
382.5
gal/min
|
26
qt/s
|
390
gal/min
|
26.5
qt/s
|
397.5
gal/min
|
27
qt/s
|
405
gal/min
|
27.5
qt/s
|
412.5
gal/min
|
28
qt/s
|
420
gal/min
|
28.5
qt/s
|
427.5
gal/min
|
29
qt/s
|
435
gal/min
|
29.5
qt/s
|
442.5
gal/min
|
30
qt/s
|
450
gal/min
|
30.5
qt/s
|
457.5
gal/min
|
31
qt/s
|
465
gal/min
|
31.5
qt/s
|
472.5
gal/min
|
32
qt/s
|
480
gal/min
|
32.5
qt/s
|
487.5
gal/min
|
33
qt/s
|
495
gal/min
|
33.5
qt/s
|
502.5
gal/min
|
34
qt/s
|
510
gal/min
|
34.5
qt/s
|
517.5
gal/min
|
35
qt/s
|
525
gal/min
|
35.5
qt/s
|
532.5
gal/min
|
36
qt/s
|
540
gal/min
|
36.5
qt/s
|
547.5
gal/min
|
37
qt/s
|
555
gal/min
|
37.5
qt/s
|
562.5
gal/min
|
38
qt/s
|
570
gal/min
|
38.5
qt/s
|
577.5
gal/min
|
39
qt/s
|
585
gal/min
|
39.5
qt/s
|
592.5
gal/min
|
40
qt/s
|
600
gal/min
|
40.5
qt/s
|
607.5
gal/min
|
41
qt/s
|
615
gal/min
|
41.5
qt/s
|
622.5
gal/min
|
42
qt/s
|
630
gal/min
|
42.5
qt/s
|
637.5
gal/min
|
43
qt/s
|
645
gal/min
|
43.5
qt/s
|
652.5
gal/min
|
44
qt/s
|
660
gal/min
|
44.5
qt/s
|
667.5
gal/min
|
45
qt/s
|
675
gal/min
|
45.5
qt/s
|
682.5
gal/min
|
46
qt/s
|
690
gal/min
|
46.5
qt/s
|
697.5
gal/min
|
47
qt/s
|
705
gal/min
|
47.5
qt/s
|
712.5
gal/min
|
48
qt/s
|
720
gal/min
|
48.5
qt/s
|
727.5
gal/min
|
49
qt/s
|
735
gal/min
|
49.5
qt/s
|
742.5
gal/min
|
50
qt/s
|
750
gal/min
|
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