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.
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.
Gallons per minute | Cubic inches per second |
---|---|
0
gal/min
|
0
in³/s
|
10
gal/min
|
38.50018
in³/s
|
20
gal/min
|
77.00035
in³/s
|
30
gal/min
|
115.50053
in³/s
|
40
gal/min
|
154.00071
in³/s
|
50
gal/min
|
192.50089
in³/s
|
60
gal/min
|
231.00106
in³/s
|
70
gal/min
|
269.50124
in³/s
|
80
gal/min
|
308.00142
in³/s
|
90
gal/min
|
346.5016
in³/s
|
100
gal/min
|
385.00177
in³/s
|
110
gal/min
|
423.50195
in³/s
|
120
gal/min
|
462.00213
in³/s
|
130
gal/min
|
500.50231
in³/s
|
140
gal/min
|
539.00248
in³/s
|
150
gal/min
|
577.50266
in³/s
|
160
gal/min
|
616.00284
in³/s
|
170
gal/min
|
654.50302
in³/s
|
180
gal/min
|
693.00319
in³/s
|
190
gal/min
|
731.50337
in³/s
|
200
gal/min
|
770.00355
in³/s
|
210
gal/min
|
808.50373
in³/s
|
220
gal/min
|
847.0039
in³/s
|
230
gal/min
|
885.50408
in³/s
|
240
gal/min
|
924.00426
in³/s
|
250
gal/min
|
962.50444
in³/s
|
260
gal/min
|
1001.00461
in³/s
|
270
gal/min
|
1039.50479
in³/s
|
280
gal/min
|
1078.00497
in³/s
|
290
gal/min
|
1116.50515
in³/s
|
300
gal/min
|
1155.00532
in³/s
|
310
gal/min
|
1193.5055
in³/s
|
320
gal/min
|
1232.00568
in³/s
|
330
gal/min
|
1270.50586
in³/s
|
340
gal/min
|
1309.00603
in³/s
|
350
gal/min
|
1347.50621
in³/s
|
360
gal/min
|
1386.00639
in³/s
|
370
gal/min
|
1424.50657
in³/s
|
380
gal/min
|
1463.00674
in³/s
|
390
gal/min
|
1501.50692
in³/s
|
400
gal/min
|
1540.0071
in³/s
|
410
gal/min
|
1578.50728
in³/s
|
420
gal/min
|
1617.00745
in³/s
|
430
gal/min
|
1655.50763
in³/s
|
440
gal/min
|
1694.00781
in³/s
|
450
gal/min
|
1732.50799
in³/s
|
460
gal/min
|
1771.00816
in³/s
|
470
gal/min
|
1809.50834
in³/s
|
480
gal/min
|
1848.00852
in³/s
|
490
gal/min
|
1886.5087
in³/s
|
500
gal/min
|
1925.00887
in³/s
|
510
gal/min
|
1963.50905
in³/s
|
520
gal/min
|
2002.00923
in³/s
|
530
gal/min
|
2040.50941
in³/s
|
540
gal/min
|
2079.00958
in³/s
|
550
gal/min
|
2117.50976
in³/s
|
560
gal/min
|
2156.00994
in³/s
|
570
gal/min
|
2194.51012
in³/s
|
580
gal/min
|
2233.01029
in³/s
|
590
gal/min
|
2271.51047
in³/s
|
600
gal/min
|
2310.01065
in³/s
|
610
gal/min
|
2348.51083
in³/s
|
620
gal/min
|
2387.011
in³/s
|
630
gal/min
|
2425.51118
in³/s
|
640
gal/min
|
2464.01136
in³/s
|
650
gal/min
|
2502.51154
in³/s
|
660
gal/min
|
2541.01171
in³/s
|
670
gal/min
|
2579.51189
in³/s
|
680
gal/min
|
2618.01207
in³/s
|
690
gal/min
|
2656.51224
in³/s
|
700
gal/min
|
2695.01242
in³/s
|
710
gal/min
|
2733.5126
in³/s
|
720
gal/min
|
2772.01278
in³/s
|
730
gal/min
|
2810.51295
in³/s
|
740
gal/min
|
2849.01313
in³/s
|
750
gal/min
|
2887.51331
in³/s
|
760
gal/min
|
2926.01349
in³/s
|
770
gal/min
|
2964.51366
in³/s
|
780
gal/min
|
3003.01384
in³/s
|
790
gal/min
|
3041.51402
in³/s
|
800
gal/min
|
3080.0142
in³/s
|
810
gal/min
|
3118.51437
in³/s
|
820
gal/min
|
3157.01455
in³/s
|
830
gal/min
|
3195.51473
in³/s
|
840
gal/min
|
3234.01491
in³/s
|
850
gal/min
|
3272.51508
in³/s
|
860
gal/min
|
3311.01526
in³/s
|
870
gal/min
|
3349.51544
in³/s
|
880
gal/min
|
3388.01562
in³/s
|
890
gal/min
|
3426.51579
in³/s
|
900
gal/min
|
3465.01597
in³/s
|
910
gal/min
|
3503.51615
in³/s
|
920
gal/min
|
3542.01633
in³/s
|
930
gal/min
|
3580.5165
in³/s
|
940
gal/min
|
3619.01668
in³/s
|
950
gal/min
|
3657.51686
in³/s
|
960
gal/min
|
3696.01704
in³/s
|
970
gal/min
|
3734.51721
in³/s
|
980
gal/min
|
3773.01739
in³/s
|
990
gal/min
|
3811.51757
in³/s
|
1000
gal/min
|
3850.01775
in³/s
|
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