GPM to PSI Conversion Calculator
GPM to PSI Calculator
Enter flow rate in gallons per minute (GPM) and input pipe diameter in inches in gpm to psi converter. Select your pipe material for friction loss coefficient. The calculator will compute the pressure loss (PSI) based on flow and pipe characteristics.
- Inputs: Flow rate = 10 GPM, Pipe size = 0.75 inches, Material = Copper
- Process: Enter values and select material type
- Result: Pressure loss is 3.2 PSI
GPM to PSI Conversion Chart
Gallons Per Minute (GPM) | Pounds Per Square Inch (PSI) |
---|---|
1 GPM | 2.31 PSI |
2 GPM | 4.62 PSI |
2.5 GPM | 5.78 PSI |
4 GPM | 9.24 PSI |
5 GPM | 11.55 PSI |
6 GPM | 13.86 PSI |
10 GPM | 23.1 PSI |
30 GPM | 69.3 PSI |
40 GPM | 92.4 PSI |
50 GPM | 115.5 PSI |
75 GPM | 173.25 PSI |
100 GPM | 231 PSI |
400 GPM | 924 PSI |
500 GPM | 1,155 PSI |
1000 GPM | 2,310 PSI |
How to Calculate GPM to PSI
To convert GPM to PSI, multiply flow rate squared by 100 times the friction factor. Divide this by pipe diameter to the fifth power. Consider pipe length, material, and fittings for accurate pressure loss calculations.
- Inputs: Flow rate = 15 GPM, Pipe size = 1 inch, Length = 100 feet
- Calculations: (0.2083 × (100/100) × (15/100)^1.85) ÷ (1)^4.8655
- Result: Pressure loss is 2.8 PSI
GPM to PSI Conversion Formula
PSI = (0.2083 × (100/100) × (GPM/100)^1.85) ÷ (d)^4.8655
Where:
GPM = Flow rate in gallons per minute
d = Pipe inside diameter in inches
PSI = Pressure loss per 100 feet of pipe
Home Water Supply
- Inputs: Flow = 12 GPM, Diameter = 0.75 inch, Length = 50 feet
- Calculations: (0.2083 × (50/100) × (12/100)^1.85) ÷ (0.75)^4.8655
- Result: 2.1 PSI pressure loss
Garden Irrigation
- Inputs: Flow = 8 GPM, Diameter = 0.5 inch, Length = 75 feet
- Calculations: (0.2083 × (75/100) × (8/100)^1.85) ÷ (0.5)^4.8655
- Result: 4.5 PSI pressure loss
Commercial System
- Inputs: Flow = 25 GPM, Diameter = 1.5 inches, Length = 200 feet
- Calculations: (0.2083 × (200/100) × (25/100)^1.85) ÷ (1.5)^4.8655
- Result: 3.9 PSI pressure loss
Sprinkler Line
- Inputs: Flow = 6 GPM, Diameter = 0.625 inch, Length = 150 feet
- Calculations: (0.2083 × (150/100) × (6/100)^1.85) ÷ (0.625)^4.8655
- Result: 2.7 PSI pressure loss
Industrial Pipe
- Inputs: Flow = 40 GPM, Diameter = 2 inches, Length = 300 feet
- Calculations: (0.2083 × (300/100) × (40/100)^1.85) ÷ (2)^4.8655
- Result: 5.3 PSI pressure loss
What is GPM and PSI?
GPM (Gallons Per Minute): A measurement of fluid flow rate indicating the volume of fluid moving through a system per minute.
1 GPM = 3.785 liters/minute = 0.063 liters/second
PSI (Pounds per Square Inch): A unit measuring fluid pressure as force per unit area, commonly used in plumbing and hydraulic systems.
1 PSI = 6.895 kPa = 0.068 atm