To convert milliliters per minute to US gallons per minute, multiply by 0.0002641720523. That factor is the whole relationship: both units measure volumetric flow, so the conversion is a proportion with no offset and no substance-specific constant.
Laboratory and infusion flow: HPLC pumps and syringe drivers are set in mL/min. The US standard for pumps, irrigation and fixtures.
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 US gallons per minute so the number you get has something to be compared against.
The formula
milliliters per minute- The amount you are converting, in milliliters per minute
0.000264172052344- The exact number of US gallons per minute in one milliliter per minute
US gallons per minute- The converted result
How it works, step by step
- Enter the value in milliliters per minute.
- It is multiplied by 0.000264172052344, the exact factor between the two units.
- The answer is shown in US gallons per minute, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A shower head: 9600 mL/min in US gallons per minute
At 9600 mL/min (a shower head), the same quantity in US gallons per minute is 9600 × 0.000264172 = 2.53605 GPM. One milliliter per minute is 0.000264172 US gallons per minute, so the numbers shrink as expected.
A bathroom tap: 6000 mL/min in US gallons per minute
A bathroom tap comes to about 6000 mL/min. Multiplying by the factor: 6000 × 0.000264172 = 1.58503 GPM. Dividing the answer back by 0.000264172 returns the figure you started with, which is the quickest way to check you have the factor the right way up.
How to read your score
Frequently asked questions
How many US gallons per minute are in one milliliter per minute?
Exactly 0.000264172052344. 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 US gallons per minute?
US gallons per minute = milliliters per minute × 0.000264172052344. Reversed, milliliters per minute = US gallons per minute ÷ 0.000264172052344, which is the same as multiplying by 3785.41178421.
Which is the bigger unit, the milliliter per minute or the US gallon per minute?
The US gallon per minute. One milliliter per minute is only 0.000264172 of a US gallon per minute, so it takes 3785.41 milliliters per minute to make one US gallon 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 milliliter per minute?
Laboratory and infusion flow: HPLC pumps and syringe drivers are set in mL/min.
What is a US gallon per minute?
The US standard for pumps, irrigation and fixtures.
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 GPM in my head?
Plenty of people do this in their head: divide by 3800 instead of using the exact factor 0.0002641720523. At 100 that shortcut gives 0.026315789 US gallons per minute, off by 0.0001014 US gallons per minute or about 0.38%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Milliliters Per Minute to US gallons per minute reference tables
| Milliliters Per Minute | Us Gallons Per Minute |
|---|---|
| 0.5 mL/min | 0.000132086 GPM |
| 1 mL/min | 0.000264172 GPM |
| 2 mL/min | 0.000528344 GPM |
| 3 mL/min | 0.000792516 GPM |
| 5 mL/min | 0.00132086 GPM |
| 10 mL/min | 0.00264172 GPM |
| 20 mL/min | 0.00528344 GPM |
| 25 mL/min | 0.0066043 GPM |
| 50 mL/min | 0.0132086 GPM |
| 75 mL/min | 0.0198129 GPM |
| 100 mL/min | 0.0264172 GPM |
| 250 mL/min | 0.066043 GPM |
| 500 mL/min | 0.132086 GPM |
| 1000 mL/min | 0.264172 GPM |
| 5000 mL/min | 1.32086 GPM |
Exact factor: 1 milliliter per minute = 0.000264172052344 US gallons per minute.
| Quantity | mL/min | GPM |
|---|---|---|
| A dripping tap | 6 mL/min | 0.001585 GPM |
| A bathroom tap | 6000 mL/min | 1.585 GPM |
| A shower head | 9600 mL/min | 2.536 GPM |
| A garden hose | 1.8e+04 mL/min | 4.755 GPM |
| A fire hydrant | 3.6e+06 mL/min | 951 GPM |
| The Thames at London | 3.9e+09 mL/min | 1.03e+06 GPM |
Published reference values, converted with the same factor this page uses.