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 centilitre per second (cL/s) may seem like an unusual unit of flow rate measurement, but it’s particularly significant in the realms of beverage production and culinary arts. If you’ve ever marveled at the precision of an espresso machine or the perfect pour of a bartender, you’re witnessing the magic of flow rates. An espresso machine, for instance, often uses precise flow rates to deliver a perfect, rich shot, often flowing at around 6-8 cL/s.
Interestingly, flow rates were critical even in Roman times for aqueduct design and water distribution. The precision continues today in modern science and industry. Even in simple household devices like kitchen faucets, understanding flow rates helps manage water usage efficiently and sustainably. Such a tiny unit, yet it embodies the harmony of precision and resource management across countless domains.
Gallons per minute | Centilitres per second |
---|---|
0
gal/min
|
0
cl/s
|
10
gal/min
|
63.0902
cl/s
|
20
gal/min
|
126.18039
cl/s
|
30
gal/min
|
189.27059
cl/s
|
40
gal/min
|
252.36079
cl/s
|
50
gal/min
|
315.45098
cl/s
|
60
gal/min
|
378.54118
cl/s
|
70
gal/min
|
441.63137
cl/s
|
80
gal/min
|
504.72157
cl/s
|
90
gal/min
|
567.81177
cl/s
|
100
gal/min
|
630.90196
cl/s
|
110
gal/min
|
693.99216
cl/s
|
120
gal/min
|
757.08236
cl/s
|
130
gal/min
|
820.17255
cl/s
|
140
gal/min
|
883.26275
cl/s
|
150
gal/min
|
946.35295
cl/s
|
160
gal/min
|
1009.44314
cl/s
|
170
gal/min
|
1072.53334
cl/s
|
180
gal/min
|
1135.62354
cl/s
|
190
gal/min
|
1198.71373
cl/s
|
200
gal/min
|
1261.80393
cl/s
|
210
gal/min
|
1324.89412
cl/s
|
220
gal/min
|
1387.98432
cl/s
|
230
gal/min
|
1451.07452
cl/s
|
240
gal/min
|
1514.16471
cl/s
|
250
gal/min
|
1577.25491
cl/s
|
260
gal/min
|
1640.34511
cl/s
|
270
gal/min
|
1703.4353
cl/s
|
280
gal/min
|
1766.5255
cl/s
|
290
gal/min
|
1829.6157
cl/s
|
300
gal/min
|
1892.70589
cl/s
|
310
gal/min
|
1955.79609
cl/s
|
320
gal/min
|
2018.88628
cl/s
|
330
gal/min
|
2081.97648
cl/s
|
340
gal/min
|
2145.06668
cl/s
|
350
gal/min
|
2208.15687
cl/s
|
360
gal/min
|
2271.24707
cl/s
|
370
gal/min
|
2334.33727
cl/s
|
380
gal/min
|
2397.42746
cl/s
|
390
gal/min
|
2460.51766
cl/s
|
400
gal/min
|
2523.60786
cl/s
|
410
gal/min
|
2586.69805
cl/s
|
420
gal/min
|
2649.78825
cl/s
|
430
gal/min
|
2712.87845
cl/s
|
440
gal/min
|
2775.96864
cl/s
|
450
gal/min
|
2839.05884
cl/s
|
460
gal/min
|
2902.14903
cl/s
|
470
gal/min
|
2965.23923
cl/s
|
480
gal/min
|
3028.32943
cl/s
|
490
gal/min
|
3091.41962
cl/s
|
500
gal/min
|
3154.50982
cl/s
|
510
gal/min
|
3217.60002
cl/s
|
520
gal/min
|
3280.69021
cl/s
|
530
gal/min
|
3343.78041
cl/s
|
540
gal/min
|
3406.87061
cl/s
|
550
gal/min
|
3469.9608
cl/s
|
560
gal/min
|
3533.051
cl/s
|
570
gal/min
|
3596.14119
cl/s
|
580
gal/min
|
3659.23139
cl/s
|
590
gal/min
|
3722.32159
cl/s
|
600
gal/min
|
3785.41178
cl/s
|
610
gal/min
|
3848.50198
cl/s
|
620
gal/min
|
3911.59218
cl/s
|
630
gal/min
|
3974.68237
cl/s
|
640
gal/min
|
4037.77257
cl/s
|
650
gal/min
|
4100.86277
cl/s
|
660
gal/min
|
4163.95296
cl/s
|
670
gal/min
|
4227.04316
cl/s
|
680
gal/min
|
4290.13336
cl/s
|
690
gal/min
|
4353.22355
cl/s
|
700
gal/min
|
4416.31375
cl/s
|
710
gal/min
|
4479.40394
cl/s
|
720
gal/min
|
4542.49414
cl/s
|
730
gal/min
|
4605.58434
cl/s
|
740
gal/min
|
4668.67453
cl/s
|
750
gal/min
|
4731.76473
cl/s
|
760
gal/min
|
4794.85493
cl/s
|
770
gal/min
|
4857.94512
cl/s
|
780
gal/min
|
4921.03532
cl/s
|
790
gal/min
|
4984.12552
cl/s
|
800
gal/min
|
5047.21571
cl/s
|
810
gal/min
|
5110.30591
cl/s
|
820
gal/min
|
5173.39611
cl/s
|
830
gal/min
|
5236.4863
cl/s
|
840
gal/min
|
5299.5765
cl/s
|
850
gal/min
|
5362.66669
cl/s
|
860
gal/min
|
5425.75689
cl/s
|
870
gal/min
|
5488.84709
cl/s
|
880
gal/min
|
5551.93728
cl/s
|
890
gal/min
|
5615.02748
cl/s
|
900
gal/min
|
5678.11768
cl/s
|
910
gal/min
|
5741.20787
cl/s
|
920
gal/min
|
5804.29807
cl/s
|
930
gal/min
|
5867.38827
cl/s
|
940
gal/min
|
5930.47846
cl/s
|
950
gal/min
|
5993.56866
cl/s
|
960
gal/min
|
6056.65885
cl/s
|
970
gal/min
|
6119.74905
cl/s
|
980
gal/min
|
6182.83925
cl/s
|
990
gal/min
|
6245.92944
cl/s
|
1000
gal/min
|
6309.01964
cl/s
|
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