The gallon per hour (GPH) might seem like a straightforward unit for measuring flow rate, but it plays a crucial role in numerous applications, from optimizing fuel efficiency in vehicles to calculating water usage for irrigation systems. Interestingly, the concept of measuring flow rates dates back to ancient Rome, where aqueducts were designed with flow capacities to regulate water supply throughout the city.
What’s more, today’s technology leverages GPH to monitor and reduce energy consumption in heating systems by determining precise fuel flow, contributing significantly to energy conservation efforts. This unit is pivotal in industries where precision and efficiency dictate success, underscoring its importance as a practical measure across various sectors. Whether in engineering or environmental management, GPH helps us navigate and optimize our resource usage.
A cubic foot per second (cfs) is a unit of flow rate that describes the volume of water or other fluids moving past a point every second. It is commonly used in hydrology to measure rivers and streams, providing insight into water availability and flood prediction. To put it in perspective, one cubic foot per second is equivalent to 7.48 gallons per second. Thus, a modest stream might flow at several tens of cfs, while larger rivers, such as the Mississippi, can exceed 500,000 cfs!
Interestingly, this unit has historical significance dating back to the early days of water management, where it played a crucial role in the development of infrastructure for agriculture and urban planning, influencing patterns of settlement and economic development around the world.
Gallons per hour | Cubic feet per second |
---|---|
0
gal/h
|
0
ft³/s
|
100
gal/h
|
0.00371335
ft³/s
|
200
gal/h
|
0.0074267
ft³/s
|
300
gal/h
|
0.0111401
ft³/s
|
400
gal/h
|
0.0148534
ft³/s
|
500
gal/h
|
0.0185668
ft³/s
|
600
gal/h
|
0.0222801
ft³/s
|
700
gal/h
|
0.0259935
ft³/s
|
800
gal/h
|
0.0297068
ft³/s
|
900
gal/h
|
0.0334202
ft³/s
|
1000
gal/h
|
0.0371335
ft³/s
|
1100
gal/h
|
0.0408469
ft³/s
|
1200
gal/h
|
0.0445602
ft³/s
|
1300
gal/h
|
0.0482736
ft³/s
|
1400
gal/h
|
0.0519869
ft³/s
|
1500
gal/h
|
0.0557003
ft³/s
|
1600
gal/h
|
0.0594136
ft³/s
|
1700
gal/h
|
0.063127
ft³/s
|
1800
gal/h
|
0.0668403
ft³/s
|
1900
gal/h
|
0.0705537
ft³/s
|
2000
gal/h
|
0.074267
ft³/s
|
2100
gal/h
|
0.0779804
ft³/s
|
2200
gal/h
|
0.0816937
ft³/s
|
2300
gal/h
|
0.0854071
ft³/s
|
2400
gal/h
|
0.0891204
ft³/s
|
2500
gal/h
|
0.0928338
ft³/s
|
2600
gal/h
|
0.0965471
ft³/s
|
2700
gal/h
|
0.10026
ft³/s
|
2800
gal/h
|
0.103974
ft³/s
|
2900
gal/h
|
0.107687
ft³/s
|
3000
gal/h
|
0.111401
ft³/s
|
3100
gal/h
|
0.115114
ft³/s
|
3200
gal/h
|
0.118827
ft³/s
|
3300
gal/h
|
0.122541
ft³/s
|
3400
gal/h
|
0.126254
ft³/s
|
3500
gal/h
|
0.129967
ft³/s
|
3600
gal/h
|
0.133681
ft³/s
|
3700
gal/h
|
0.137394
ft³/s
|
3800
gal/h
|
0.141107
ft³/s
|
3900
gal/h
|
0.144821
ft³/s
|
4000
gal/h
|
0.148534
ft³/s
|
4100
gal/h
|
0.152247
ft³/s
|
4200
gal/h
|
0.155961
ft³/s
|
4300
gal/h
|
0.159674
ft³/s
|
4400
gal/h
|
0.163387
ft³/s
|
4500
gal/h
|
0.167101
ft³/s
|
4600
gal/h
|
0.170814
ft³/s
|
4700
gal/h
|
0.174527
ft³/s
|
4800
gal/h
|
0.178241
ft³/s
|
4900
gal/h
|
0.181954
ft³/s
|
5000
gal/h
|
0.185668
ft³/s
|
5100
gal/h
|
0.189381
ft³/s
|
5200
gal/h
|
0.193094
ft³/s
|
5300
gal/h
|
0.196808
ft³/s
|
5400
gal/h
|
0.200521
ft³/s
|
5500
gal/h
|
0.204234
ft³/s
|
5600
gal/h
|
0.207948
ft³/s
|
5700
gal/h
|
0.211661
ft³/s
|
5800
gal/h
|
0.215374
ft³/s
|
5900
gal/h
|
0.219088
ft³/s
|
6000
gal/h
|
0.222801
ft³/s
|
6100
gal/h
|
0.226514
ft³/s
|
6200
gal/h
|
0.230228
ft³/s
|
6300
gal/h
|
0.233941
ft³/s
|
6400
gal/h
|
0.237654
ft³/s
|
6500
gal/h
|
0.241368
ft³/s
|
6600
gal/h
|
0.245081
ft³/s
|
6700
gal/h
|
0.248794
ft³/s
|
6800
gal/h
|
0.252508
ft³/s
|
6900
gal/h
|
0.256221
ft³/s
|
7000
gal/h
|
0.259935
ft³/s
|
7100
gal/h
|
0.263648
ft³/s
|
7200
gal/h
|
0.267361
ft³/s
|
7300
gal/h
|
0.271075
ft³/s
|
7400
gal/h
|
0.274788
ft³/s
|
7500
gal/h
|
0.278501
ft³/s
|
7600
gal/h
|
0.282215
ft³/s
|
7700
gal/h
|
0.285928
ft³/s
|
7800
gal/h
|
0.289641
ft³/s
|
7900
gal/h
|
0.293355
ft³/s
|
8000
gal/h
|
0.297068
ft³/s
|
8100
gal/h
|
0.300781
ft³/s
|
8200
gal/h
|
0.304495
ft³/s
|
8300
gal/h
|
0.308208
ft³/s
|
8400
gal/h
|
0.311921
ft³/s
|
8500
gal/h
|
0.315635
ft³/s
|
8600
gal/h
|
0.319348
ft³/s
|
8700
gal/h
|
0.323062
ft³/s
|
8800
gal/h
|
0.326775
ft³/s
|
8900
gal/h
|
0.330488
ft³/s
|
9000
gal/h
|
0.334202
ft³/s
|
9100
gal/h
|
0.337915
ft³/s
|
9200
gal/h
|
0.341628
ft³/s
|
9300
gal/h
|
0.345342
ft³/s
|
9400
gal/h
|
0.349055
ft³/s
|
9500
gal/h
|
0.352768
ft³/s
|
9600
gal/h
|
0.356482
ft³/s
|
9700
gal/h
|
0.360195
ft³/s
|
9800
gal/h
|
0.363908
ft³/s
|
9900
gal/h
|
0.367622
ft³/s
|
10000
gal/h
|
0.371335
ft³/s
|
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