GPM to MGD Calculator

Last updated: 27 Sep 2025 | Author: Brij | Review By: Irshad

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Convert Gallons per Minute (GPM) to Million Gallons per Day (MGD) instantly with our free calculator. Useful for water treatment plants, municipal supply systems, and engineering projects.

Flow Rate (GPM):

GPM

Gallons per Minute

Flow Rate (MGD):

MGD

Million Gallons per Day

In water supply and treatment industries, flow rates are often measured in GPM (Gallons per Minute) or MGD (Million Gallons per Day). Converting between these units is important for engineers and operators to size pumps, pipes, and treatment equipment.

Our GPM to MGD Calculator makes this conversion quick and accurate.

Formula: GPM to MGD Conversion

The conversion is based on the fact that 1 MGD = 694.444 GPM.

$\text{MGD} = \frac{\text{GPM}}{694.444}$

Where:

GPM = Gallons per Minute
MGD = Million Gallons per Day

Example Calculation

Suppose you have a water flow of 1,500 GPM. To convert it to MGD:

$\text{MGD} = \frac{1500}{694.444} \approx 2.16$

So, 1,500 GPM ≈ 2.16 MGD.

Conclusion

The GPM to MGD Calculator helps engineers, plant operators, and water supply professionals make accurate conversions quickly. Whether you’re managing municipal water or designing treatment systems, this tool simplifies your work.

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