Conversion tool
Convert cubic feet per minute to gallons per minute instantly
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Disclaimer: Use calculations at your own risk. For critical applications, verify results against your governing standards/specifications.
How it works
We use gpm = cfm x 7.48051948052.
Exact relationship: 1 cfm = 7.48051948052 gpm.
Example: 100 cfm = 748.052 gpm.
Notes: Results are rounded in the default view.
Examples
- 100 cfm = 748.052 gpm
- 1000 cfm = 7480.519 gpm
- 10000 cfm = 74805.195 gpm
FAQ
What physical quantity do cubic feet per minute and gallons per minute express?
Cubic feet per minute express airflow and bulk volumetric movement at a building or equipment scale. Gallons per minute express volumetric flow rate, meaning how much volume moves over time rather than static capacity alone.
What is the difference between cubic feet per minute and gallons per minute?
Cubic feet per minute and gallons per minute both express volumetric flow rate, but they are favored in different liquid, air, utility, and process-system contexts.
What is the history of the cubic foot per minute?
Cubic feet per minute became standard in HVAC, fans, blowers, and air-system practice where foot-based volume units were already common.
What is the history of the gallon per minute?
Gallons per minute grew from customary liquid-capacity practice and became standard in pumps, plumbing, and water-system work.
Were the cubic foot per minute and gallon per minute discovered by a specific person?
Cubic feet per minute are a conventional flow unit rather than a one-person discovery. Gallons per minute are a practical derived engineering unit rather than a one-person discovery.
Where are cubic feet per minute and gallons per minute used in science and engineering?
Cfm is used in HVAC, compressed air, ventilation, dust collection, fans, and equipment airflow specs. Gallons per minute are used in pumps, water systems, coolant loops, irrigation, hydraulics, and utility flow discussions.
Why do flow-rate units matter in calculations?
Flow-rate units affect pump sizing, piping, ventilation, residence time, equipment selection, and process throughput. Keeping the unit attached helps avoid confusing static volume with volume per unit time.
Can I trust this for critical flow calculations?
Use this for convenience and verify against your governing standard, equipment curve, or controlled engineering source for critical work. Real systems still depend on pressure, temperature, losses, and operating conditions.
References
- Exact constant used: 1 cfm = 7.48051948052 gpm.
- Volume-flow conversions are derived from consistent relationships anchored to cubic meters per second.