GPM Calculator
Enter the volume and time in the tool and the calculator will find the flow rate of liquid in various units.
The GPM Calculator determines the flow rate in gallons per minute, gallons per hour, and across various Metric and British Imperial units.
What is GPM?
GPM is a unit of flow rate of liquids and it stands for "Gallons per Minute". GPM is used to specify how fast a liquid moves through pipes, pumps etc. The "Gallons per Minute" can either be the US liquid gallon or the British imperial gallon.
The US and British gallons are:
US Gallons = 3.785 liters
British Imperial Gallon = 4.546 liters
How to Calculate Gallons per Minute (GPM)?
GPM is a measure of the volumetric flow rate of a liquid, usually water. It tells you how many gallons of liquid pass through a point in one minute.
To calculate GPM, you can fill a container and measure the time it takes. For example:
If a container is filled in 10 seconds, the GPM is:
\[ \text{GPM} = \frac{60 \text{ seconds}}{\text{Time in seconds}} = \frac{60}{10} = 6 \text{ GPM} \]
General Formula:
\[ \text{GPM} = \frac{\text{Volume (gallons)}}{\text{Time (minutes)}} \]
To measure the gallons per minute follow the steps below:
- Get a container to keep a record of how many seconds it takes to fill the container with water.
- Convert the volume of water in a container to gallons
- Divide the volume by the seconds to calculate the gallons per second
- Multiply by 60 to calculate gallons per minute
For the conversion of liter per min to GPM, you only need to enter two variables in the gallon to GPM calculator.
GPM to LPM Conversion Table:
The liter per min to GPM conversion is given in the table below:
The GPM to LPM conversion
| 1 gal/m = \(1 \times 3.7854 = 3.7854 \text{ lt/m}\) | 11 gal/m = \(11 \times 3.7854 = 41.6394 \text{ lt/m}\) | 21 gal/m = \(21 \times 3.7854 = 79.4934 \text{ lt/m}\) |
| 2 gal/m = \(2 \times 3.7854 = 7.5708 \text{ lt/m}\) | 12 gal/m = \(12 \times 3.7854 = 45.4248 \text{ lt/m}\) | 22 gal/m = \(22 \times 3.7854 = 83.2788 \text{ lt/m}\) |
| 3 gal/m = \(3 \times 3.7854 = 11.3562 \text{ lt/m}\) | 13 gal/m = \(13 \times 3.7854 = 49.2102 \text{ lt/m}\) | 23 gal/m = \(23 \times 3.7854 = 87.0652 \text{ lt/m}\) |
| 4 gal/m = \(4 \times 3.7854 = 15.1416 \text{ lt/m}\) | 14 gal/m = \(14 \times 3.7854 = 52.9956 \text{ lt/m}\) | 24 gal/m = \(24 \times 3.7854 = 90.8496 \text{ lt/m}\) |
| 5 gal/m = \(5 \times 3.7854 = 18.9270 \text{ lt/m}\) | 15 gal/m = \(15 \times 3.7854 = 56.7810 \text{ lt/m}\) | 25 gal/m = \(25 \times 3.7854 = 94.6350 \text{ lt/m}\) |
| 6 gal/m = \(6 \times 3.7854 = 22.7124 \text{ lt/m}\) | 16 gal/m = \(16 \times 3.7854 = 60.5664 \text{ lt/m}\) | 26 gal/m = \(26 \times 3.7854 = 98.4204 \text{ lt/m}\) |
| 7 gal/m = \(7 \times 3.7854 = 26.4978 \text{ lt/m}\) | 17 gal/m = \(17 \times 3.7854 = 64.3518 \text{ lt/m}\) | 27 gal/m = \(27 \times 3.7854 = 102.1058 \text{ lt/m}\) |
| 8 gal/m = \(8 \times 3.7854 = 30.2832 \text{ lt/m}\) | 18 gal/m = \(18 \times 3.7854 = 68.1372 \text{ lt/m}\) | 28 gal/m = \(28 \times 3.7854 = 105.9912 \text{ lt/m}\) |
| 9 gal/m = \(9 \times 3.7854 = 34.0686 \text{ lt/m}\) | 19 gal/m = \(19 \times 3.7854 = 71.9226 \text{ lt/m}\) | 29 gal/m = \(29 \times 3.7854 = 109.7766 \text{ lt/m}\) |
| 10 gal/m = \(10 \times 3.7854 = 37.854 \text{ lt/m}\) | 20 gal/m = \(20 \times 3.7854 = 75.708 \text{ lt/m}\) | 30 gal/m = \(30 \times 3.7854 = 113.562 \text{ lt/m}\) |
Working of GPM Calculator :
Our gallon to GPM calculator is quite simple to use! It only requires two variables to calculate the GPM to LPM and in other units as well. Let’s see how!
Input:
- Enter the volume and choose the unit
- Enter the flow time and choose the unit
- Choose the output unit of flow rate
- Hit the calculate
Output:
- Flow rate is selected unit
FAQs:
How to Convert LPM to GPM?
To convert Liters per Minute (LPM) to Gallons per Minute (GPM), use the conversion factor:
\(1 \text{ LPM} = 0.264172052 \text{ US GPM}\)
So, if you have a flow rate of \(x\) liters per minute, the equivalent in gallons per minute is:
\(x \text{ LPM} \times 0.264172052 = y \text{ GPM}\)
Example: Convert 10 LPM to GPM:
\(10 \text{ LPM} \times 0.264172052 = 2.64172 \text{ GPM}\)
How Many Gallons per Minute does a Shower Use?
Showering is typically the third largest water use in a household, after toilets and laundry. The average American shower flow rate is estimated at:
\(2.1 \text{ GPM}\)
If you want to calculate total water used during a shower, you can use:
\(\text{Total Water (gallons)} = \text{Flow Rate (GPM)} \times \text{Duration (minutes)}\)
Example: A 10-minute shower with 2.1 GPM flow rate:
\(2.1 \times 10 = 21 \text{ gallons}\)
What is the Average Gallons per Minute Demand of a Home?
For the average household, peak water demand is roughly:
\(5 \text{ GPM}\)
This means that during peak usage, a household can typically handle:
\(\text{Water used per hour} = 5 \text{ GPM} \times 60 \text{ minutes} = 300 \text{ gallons/hour}\)
This ensures that most households can meet both daily and peak water requirements without running low on water pressure.
References:
From the source of geoforminternational.com: GPM
From the source of contractingbusiness.com: Gallons Per Minute
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