One US gallon per day is exactly 9.283369999e-05 cubic feet per minute, so converting US gallons per day to cubic feet per minute is a single multiplication. Enter any figure and the result appears as you type — the arithmetic runs in your browser, so nothing is sent anywhere.
The rating unit for reverse-osmosis membranes and water demand. The airflow rating for fans, HVAC and compressors in the US.
Standard versus actual volume. Gas flow in CFM depends on pressure and temperature, which is why compressor ratings say SCFM and specify the reference conditions. Converting the number is exact; comparing two ratings measured at different conditions is not. Below the calculator there is a step table for the values people look up most, and a second table putting real volumetric flow figures into cubic feet per minute so the number you get has something to be compared against.
The formula
US gallons per day- The amount you are converting, in US gallons per day
9.28336999911e-05- The exact number of cubic feet per minute in one US gallon per day
cubic feet per minute- The converted result
How it works, step by step
- Enter the value in US gallons per day.
- It is multiplied by 9.28336999911e-05, the exact factor between the two units.
- The answer is shown in cubic feet per minute, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A bathroom tap: 2280 GPD in cubic feet per minute
Take a bathroom tap, roughly 2280 GPD. The conversion is a single multiplication — 2280 × 9.28337e-05 — giving 0.211661 CFM. Because the relationship is proportional, doubling the input doubles the answer to 0.423322 CFM.
A dripping tap: 2.28 GPD in cubic feet per minute
At 2.28 GPD (a dripping tap), the same quantity in cubic feet per minute is 2.28 × 9.28337e-05 = 0.000211661 CFM. One US gallon per day is 9.28337e-05 cubic feet per minute, so the numbers shrink as expected.
How to read your score
Frequently asked questions
How many cubic feet per minute are in one US gallon per day?
Exactly 9.28336999911e-05. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert US gallons per day to cubic feet per minute?
cubic feet per minute = US gallons per day × 9.28336999911e-05. Reversed, US gallons per day = cubic feet per minute ÷ 9.28336999911e-05, which is the same as multiplying by 10,771.9502734.
Which is the bigger unit, the US gallon per day or the cubic foot per minute?
The cubic foot per minute. One US gallon per day is only 9.28337e-05 of a cubic foot per minute, so it takes 10,772 US gallons per day to make one cubic foot per minute.
What does this quantity actually measure?
Both units measure volumetric flow. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a US gallon per day?
The rating unit for reverse-osmosis membranes and water demand.
What is a cubic foot per minute?
The airflow rating for fans, HVAC and compressors in the US.
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Is there a quick way to do GPD to CFM in my head?
Plenty of people do this in their head: divide by 11,000 instead of using the exact factor 0.000093. At 100 that shortcut gives 0.0090909091 cubic feet per minute, off by 0.0001925 cubic feet per minute or about 2.07%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Us Gallons Per Day to cubic feet per minute reference tables
| Us Gallons Per Day | Cubic Feet Per Minute |
|---|---|
| 0.5 GPD | 4.64168e-05 CFM |
| 1 GPD | 9.28337e-05 CFM |
| 2 GPD | 0.000185667 CFM |
| 3 GPD | 0.000278501 CFM |
| 5 GPD | 0.000464168 CFM |
| 10 GPD | 0.000928337 CFM |
| 20 GPD | 0.00185667 CFM |
| 25 GPD | 0.00232084 CFM |
| 50 GPD | 0.00464168 CFM |
| 75 GPD | 0.00696253 CFM |
| 100 GPD | 0.00928337 CFM |
| 250 GPD | 0.0232084 CFM |
| 500 GPD | 0.0464168 CFM |
| 1000 GPD | 0.0928337 CFM |
| 5000 GPD | 0.464168 CFM |
Exact factor: 1 US gallon per day = 9.28336999911e-05 cubic feet per minute.
| Quantity | GPD | CFM |
|---|---|---|
| A dripping tap | 2.282 GPD | 0.0002119 CFM |
| A bathroom tap | 2282 GPD | 0.2119 CFM |
| A shower head | 3652 GPD | 0.339 CFM |
| A garden hose | 6847 GPD | 0.6357 CFM |
| A fire hydrant | 1.369e+06 GPD | 127.1 CFM |
| The Thames at London | 1.484e+09 GPD | 1.377e+05 CFM |
Published reference values, converted with the same factor this page uses.