CFS to GPM conversion calculator

Convert Cubic Feet per Second (CFS) to Gallons per Minute (GPM) - useful for flow rate conversions in water systems, plumbing, and hydraulic engineering

Input Parameters

Calculation Results

Calculation Formula

GPM = CFS × 448.333

Where:
CFS = Cubic Feet per Second
GPM = Gallons per Minute
448.333 = Conversion factor (1 cubic foot = 7.481 gallons, 60 seconds in minute)

CFS to GPM conversion calculator Calculator Usage Guide

Learn how to use the CFS to GPM conversion calculator and its working principles

How to Use This Calculator

  1. Enter the flow rate in Cubic Feet per Second (CFS) in the first input field.
  2. Click the "Calculate" button to convert the value to Gallons per Minute (GPM).
  3. The result will be displayed in the GPM field.
  4. Use the "Reset" button to clear all inputs and start over.

When to Use This Calculator

This calculator is useful in various applications including:

  • Water system design and engineering
  • Plumbing system calculations
  • Irrigation system planning
  • Hydraulic analysis
  • Flow measurement conversions

Example Calculation

If you have a water flow rate of 2.5 CFS, the conversion to GPM would be:

2.5 CFS × 448.333 = 1120.8325 GPM

Conversion Factor Explanation

The conversion factor of 448.333 comes from:

1 cubic foot = 7.481 gallons

1 minute = 60 seconds

So: 7.481 gallons/cubic foot × 60 seconds/minute = 448.866 gallons/minute

(Note: The calculator uses 448.333 as a simplified conversion factor)