Conversion tool

Convert gallons per minute to cubic feet per minute instantly

Enter a value, see the result, copy it, and save a PDF snapshot.

Input

Type a value, then press Enter to calculate.

Result

0.000 cfm

Digits 3

Rounded for readability. Use the arrows to increase or decrease the number of shown digits.

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Notes

Use this space for project notes before saving as PDF.

Disclaimer: Use calculations at your own risk. For critical applications, verify results against your governing standards/specifications.

How it works

We use cfm = gpm x 0.133680555556.

Exact relationship: 1 gpm = 0.133680555556 cfm.

Example: 1 gpm = 0.134 cfm.

Notes: Results are rounded in the default view.

Examples

FAQ

What physical quantity do gallons per minute and cubic feet per minute express?

Gallons per minute express volumetric flow rate, meaning how much volume moves over time rather than static capacity alone. Cubic feet per minute express airflow and bulk volumetric movement at a building or equipment scale.

What is the difference between gallons per minute and cubic feet per minute?

Gallons per minute and cubic feet 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 gallon per minute?

Gallons per minute grew from customary liquid-capacity practice and became standard in pumps, plumbing, and water-system work.

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.

Were the gallon per minute and cubic foot per minute discovered by a specific person?

Gallons per minute are a practical derived engineering unit rather than a one-person discovery. Cubic feet per minute are a conventional flow unit rather than a one-person discovery.

Where are gallons per minute and cubic feet per minute used in science and engineering?

Gallons per minute are used in pumps, water systems, coolant loops, irrigation, hydraulics, and utility flow discussions. Cfm is used in HVAC, compressed air, ventilation, dust collection, fans, and equipment airflow specs.

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