Gallon per minute is a unit of volume flow rate. Our GPM calculator works with a wide variety of units and enables quick conversions between different measurement types. You can use it to convert LPM to GPM, litres per minute to gallons per minute, and many others.
A gallon per minute is a measure of the amount of water that flows into a container over a given period of time. It is also referred to as a volume flow rate, which is an important metric for the water industry and in everyday life.
To determine GPM, simply use a container with a known capacity, such as a bucket, and time how long it takes to fill. Then divide 60 by your timed result. For example, if it takes five seconds to fill the container, your GPM would be 12 gallons per minute (60 / 5 = 12.)
GPM is often used in conjunction with other measurement units such as liters per second and head, which are measures of velocity. For example, standard showerheads are required to have a water flow rate of 2 GPM in the US. This is to ensure that enough water is available for washing and other purposes. The higher the GPM, the faster the water is flowing. However, this is not always the case as many factors can influence a showerhead’s water flow rate. For more information on how to calculate GPM, read this article: How to Calculate Gallons Per Minute. gpm to lpm converter