GPM to CFS Calculator

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

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Easily convert Gallons per Minute (GPM) to Cubic Feet per Second (CFS) with our free calculator. Perfect for water flow calculations in hydraulics, plumbing, and irrigation projects.

Flow Rate (GPM):

GPM

Gallons per Minute

Conversion Results

Flow Rate (CFS):

CFS

Cubic Feet per Second

Conversion Details

Input Flow Rate: 0 GPM

Gallons to Cubic Feet: 1 gallon = 0.133681 ft³

Minutes to Seconds: 1 minute = 60 seconds

Conversion Factor: 1 GPM = 0.002228 CFS

When working with fluid systems, different units are used to measure flow rates. In the U.S., Gallons per Minute (GPM) is common, while engineers often use Cubic Feet per Second (CFS) in hydraulics and civil engineering.

This calculator helps you quickly convert between these two units.

Formula: GPM to CFS Conversion

The formula to convert GPM to CFS is:

$\text{CFS} = \frac{\text{GPM}}{448.831}$

Where:

GPM = Gallons per Minute
CFS = Cubic Feet per Second

Example Calculation

Suppose you have a water flow of 900 GPM. To convert it to CFS:

$\text{CFS} = \frac{900}{448.831} \approx 2.01$

So, 900 GPM ≈ 2.01 CFS.

Conclusion

Using this formula, you can easily switch between GPM and CFS. Our calculator makes it simple for engineers, plumbers, and construction professionals who deal with water flow measurements regularly.

Check out 1 similar GPM to CFS Calculator :

GPM to CFS Calculator

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