This page converts milliliters per minute into imperial gallons per minute using the factor 0.0002199692483, and shows the reverse figure alongside it. Both units measure volumetric flow, which is why one number does the whole job.
Laboratory and infusion flow: HPLC pumps and syringe drivers are set in mL/min. The British pump unit, about 20% more volume per minute than the US gallon version.
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 imperial 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
0.000219969248299- The exact number of imperial gallons per minute in one milliliter per minute
imperial gallons per minute- The converted result
How it works, step by step
- Enter the value in milliliters per minute.
- It is multiplied by 0.000219969248299, the exact factor between the two units.
- The answer is shown in imperial gallons per minute, 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 imperial gallons per minute
Take a dripping tap, roughly 6 mL/min. The conversion is a single multiplication — 6 × 0.000219969 — giving 0.00131982 gpm. Because the relationship is proportional, doubling the input doubles the answer to 0.00263963 gpm.
A shower head: 9600 mL/min in imperial gallons per minute
Take a shower head, roughly 9600 mL/min. The conversion is a single multiplication — 9600 × 0.000219969 — giving 2.1117 gpm. Because the relationship is proportional, doubling the input doubles the answer to 4.22341 gpm.
How to read your score
Frequently asked questions
How many imperial gallons per minute are in one milliliter per minute?
Exactly 0.000219969248299. 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 imperial gallons per minute?
imperial gallons per minute = milliliters per minute × 0.000219969248299. Reversed, milliliters per minute = imperial gallons per minute ÷ 0.000219969248299, which is the same as multiplying by 4546.09.
Which is the bigger unit, the milliliter per minute or the imperial gallon per minute?
The imperial gallon per minute. One milliliter per minute is only 0.000219969 of a imperial gallon per minute, so it takes 4546.09 milliliters per minute to make one imperial 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 imperial gallon per minute?
The British pump unit, about 20% more volume per minute than the US gallon version.
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 4500 instead of using the exact factor 0.0002199692483. At 100 that shortcut gives 0.022222222 imperial gallons per minute, off by 0.0002253 imperial gallons per minute or about 1.02%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Milliliters Per Minute to imperial gallons per minute reference tables
| Milliliters Per Minute | Imperial Gallons Per Minute |
|---|---|
| 0.5 mL/min | 0.000109985 gpm |
| 1 mL/min | 0.000219969 gpm |
| 2 mL/min | 0.000439938 gpm |
| 3 mL/min | 0.000659908 gpm |
| 5 mL/min | 0.00109985 gpm |
| 10 mL/min | 0.00219969 gpm |
| 20 mL/min | 0.00439938 gpm |
| 25 mL/min | 0.00549923 gpm |
| 50 mL/min | 0.0109985 gpm |
| 75 mL/min | 0.0164977 gpm |
| 100 mL/min | 0.0219969 gpm |
| 250 mL/min | 0.0549923 gpm |
| 500 mL/min | 0.109985 gpm |
| 1000 mL/min | 0.219969 gpm |
| 5000 mL/min | 1.09985 gpm |
Exact factor: 1 milliliter per minute = 0.000219969248299 imperial gallons per minute.
| Quantity | mL/min | gpm |
|---|---|---|
| A dripping tap | 6 mL/min | 0.00132 gpm |
| A bathroom tap | 6000 mL/min | 1.32 gpm |
| A shower head | 9600 mL/min | 2.112 gpm |
| A garden hose | 1.8e+04 mL/min | 3.959 gpm |
| A fire hydrant | 3.6e+06 mL/min | 791.9 gpm |
| The Thames at London | 3.9e+09 mL/min | 8.579e+05 gpm |
Published reference values, converted with the same factor this page uses.