GPM stands for gallons per minute, and it is a unit of volume flow rate. It is commonly used for water flow rates – for example, through pumps or showerheads. It is also a common unit for measuring the speed of liquids. For instance, a standard garden hose typically delivers between 9 and 17 gallons per minute, depending on the size of the hose and water pressure.
To calculate GPM you can use a container (such as a bucket) and time how long it takes to fill up with water, then divide that number by the capacity of the container. For the most precise measurements, repeat the process multiple times and average the results. This method is especially useful when determining the GPM of showerheads, as it helps ensure that you are using a water-saving model.
Another method is to use a tank. The easiest way to do this is by measuring the number of seconds it takes for a certain amount of water to pass through the tank. This can be done with a stopwatch, or by using a calculator. The GPM can be calculated from the measurement by dividing the number of seconds by 60, or by dividing the capacity of the tank in gallons by the water flow rate in seconds.
The GPM calculator works with a variety of units and is also capable of converting LPM, CFM, CFS, and AFA. If you wish to convert a different unit, click the link on the right side of the calculator’s title bar. gallons per minute to litres per minute