This page converts milliliters per minute into cubic feet per hour using the factor 0.002118880003, and shows the reverse figure alongside it. Both units measure volumetric flow, which is why one number does the whole job.
Gas appliance and small-flow rating in the US. Laboratory and infusion flow: HPLC pumps and syringe drivers are set in mL/min.
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. The tables underneath give both a plain step-by-step lookup and a list of real quantities expressed in cubic feet per hour, so you can sanity-check whether your answer is a plausible size.
The formula
milliliters per minute- The amount you are converting, in milliliters per minute
0.00211888000329- The exact number of cubic feet per hour in one milliliter per minute
cubic feet per hour- The converted result
How it works, step by step
- Enter the value in milliliters per minute.
- It is multiplied by 0.00211888000329, the exact factor between the two units.
- The answer is shown in cubic feet per hour, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A dripping tap: 6 mL/min in cubic feet per hour
At 6 mL/min (a dripping tap), the same quantity in cubic feet per hour is 6 × 0.00211888 = 0.0127133 CFH. One milliliter per minute is 0.00211888 cubic feet per hour, so the numbers shrink as expected.
A fire hydrant: 3.6e+06 mL/min in cubic feet per hour
Take a fire hydrant, roughly 3.6e+06 mL/min. The conversion is a single multiplication — 3.6e+06 × 0.00211888 — giving 7627.97 CFH. Because the relationship is proportional, doubling the input doubles the answer to 15,255.9 CFH.
How to read your score
Frequently asked questions
How many cubic feet per hour are in one milliliter per minute?
Exactly 0.00211888000329. 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 milliliters per minute to cubic feet per hour?
cubic feet per hour = milliliters per minute × 0.00211888000329. Reversed, milliliters per minute = cubic feet per hour ÷ 0.00211888000329, which is the same as multiplying by 471.9474432.
Which is the bigger unit, the milliliter per minute or the cubic foot per hour?
The cubic foot per hour. One milliliter per minute is only 0.00211888 of a cubic foot per hour, so it takes 471.947 milliliters per minute to make one cubic foot per hour.
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 milliliter per minute?
Laboratory and infusion flow: HPLC pumps and syringe drivers are set in mL/min.
What is a cubic foot per hour?
Gas appliance and small-flow rating 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 mL/min to CFH in my head?
Plenty of people do this in their head: divide by 470 instead of using the exact factor 0.002118880003. At 100 that shortcut gives 0.21276596 cubic feet per hour, off by 0.000878 cubic feet per hour or about 0.41%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Milliliters Per Minute to cubic feet per hour reference tables
| Milliliters Per Minute | Cubic Feet Per Hour |
|---|---|
| 0.5 mL/min | 0.00105944 CFH |
| 1 mL/min | 0.00211888 CFH |
| 2 mL/min | 0.00423776 CFH |
| 3 mL/min | 0.00635664 CFH |
| 5 mL/min | 0.0105944 CFH |
| 10 mL/min | 0.0211888 CFH |
| 20 mL/min | 0.0423776 CFH |
| 25 mL/min | 0.052972 CFH |
| 50 mL/min | 0.105944 CFH |
| 75 mL/min | 0.158916 CFH |
| 100 mL/min | 0.211888 CFH |
| 250 mL/min | 0.52972 CFH |
| 500 mL/min | 1.05944 CFH |
| 1000 mL/min | 2.11888 CFH |
| 5000 mL/min | 10.5944 CFH |
Exact factor: 1 milliliter per minute = 0.00211888000329 cubic feet per hour.
| Quantity | mL/min | CFH |
|---|---|---|
| A dripping tap | 6 mL/min | 0.01271 CFH |
| A bathroom tap | 6000 mL/min | 12.71 CFH |
| A shower head | 9600 mL/min | 20.34 CFH |
| A garden hose | 1.8e+04 mL/min | 38.14 CFH |
| A fire hydrant | 3.6e+06 mL/min | 7628 CFH |
| The Thames at London | 3.9e+09 mL/min | 8.264e+06 CFH |
Published reference values, converted with the same factor this page uses.