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Informative Calculators ▶ GPM Calculator

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**Table of Content**

The GPM calculator calculates the flow rate in gallons per minute, gallons per hour, and in a number of Metric and British Imperial units.

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**

GPM is a measure of the volumetric flow rate of a liquid, most often water is taken as liquid. Our water GPM calculator includes multiple units and converts the LPM to GPM, GPM to LPM, gallons per hour to gallons per minute, and much more.

To calculate gallons per minute, fill a container with one gallon in one minute and divide it by 60. If you want to fill the container in 10 seconds. Then the GPM measurement is 6 GPM (60/10 seconds = 6 GPM).

The GPM formula is:

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.

The liter per min to GPM conversion is given in the table below:

1 gal/m = 3.7854 lt/m | 11 gal/m = 41.6395 lt/m | 21 gal/m = 79.4936 lt/m |

2 gal/m = 7.5708 lt/m | 12 gal/m = 45.4249 lt/m | 22 gal/m = 83.2791 lt/m |

3 gal/m = 11.3562 lt/m | 13 gal/m = 49.2104 lt/m | 23 gal/m = 87.0645 lt/m |

4 gal/m = 15.1416 lt/m | 14 gal/m = 52.9958 lt/m | 24 gal/m = 90.8499 lt/m |

5 gal/m = 18.9271 lt/m | 15 gal/m = 56.7812 lt/m | 25 gal/m = 94.6353 lt/m |

6 gal/m = 22.7125 lt/m | 16 gal/m = 60.5666 lt/m | 26 gal/m = 98.4207 lt/m |

7 gal/m = 26.4979 lt/m | 17 gal/m = 64.352 lt/m | 27 gal/m = 102.206 lt/m |

8 gal/m = 30.2833 lt/m | 18 gal/m = 68.1374 lt/m | 28 gal/m = 105.992 lt/m |

9 gal/m = 34.0687 lt/m | 19 gal/m = 71.9228 lt/m | 29 gal/m = 109.777 lt/m |

10 gal/m = 37.8541 lt/m | 20 gal/m = 75.7082 lt/m | 30 gal/m = 113.562 lt/m |

40 gal/m = 151.416 lt/m | 70 gal/m = 264.979 lt/m | 100 gal/m = 378.541 lt/m |

50 gal/m = 189.271 lt/m | 80 gal/m = 302.833 lt/m | 110 gal/m = 416.395 lt/m |

60 gal/m = 227.125 lt/m | 90 gal/m = 340.687 lt/m | 120 gal/m = 454.249 lt/m |

200 gal/m = 757.082 lt/m | 500 gal/m = 1892.71 lt/m | 800 gal/m = 3028.33 lt/m |

300 gal/m = 1135.62 lt/m | 600 gal/m = 2271.25 lt/m | 900 gal/m = 3406.87 lt/m |

400 gal/m = 1514.16 lt/m | 700 gal/m = 2649.79 lt/m | 1000 gal/m = 3785.41 lt/m |

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

For converting the Liter per Minute to Gallon per Minute, use the following conversion:

1 Liter per Minute = 0.264172052 US Gallons per Minute.

Showering usually uses the third greatest water use in a normal home, after the toilets and washing clothes. It is estimated that the average American shower flow rate is 2.1 gallons per minute.

5 GPM is a fair estimate of peak demand for the average household. Therefore, most households are able to meet their peak and daily water demands by consistently producing 5 GPM.

From the source of geoforminternational.com: GPM

From the source of contractingbusiness.com: Gallons Per Minute