One liter per minute is exactly 0.2199692483 imperial gallons per minute, so converting liters per minute to imperial gallons 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 British pump unit, about 20% more volume per minute than the US gallon version. The flow unit for taps, showers and medical oxygen.
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. Two tables follow: rounded steps for quick lookup, and a set of real reference quantities converted into imperial gallons per minute, which is usually more useful than the bare number.
The formula
liters per minute- The amount you are converting, in liters per minute
0.219969248299- The exact number of imperial gallons per minute in one liter per minute
imperial gallons per minute- The converted result
How it works, step by step
- Enter the value in liters per minute.
- It is multiplied by 0.219969248299, 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 fire hydrant: 3600 L/min in imperial gallons per minute
At 3600 L/min (a fire hydrant), the same quantity in imperial gallons per minute is 3600 × 0.219969 = 791.889 gpm. One liter per minute is 0.219969 imperial gallons per minute, so the numbers shrink as expected.
A shower head: 9.6 L/min in imperial gallons per minute
At 9.6 L/min (a shower head), the same quantity in imperial gallons per minute is 9.6 × 0.219969 = 2.1117 gpm. One liter per minute is 0.219969 imperial gallons per minute, so the numbers shrink as expected.
How to read your score
Frequently asked questions
How many imperial gallons per minute are in one liter per minute?
Exactly 0.219969248299. 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 liters per minute to imperial gallons per minute?
imperial gallons per minute = liters per minute × 0.219969248299. Reversed, liters per minute = imperial gallons per minute ÷ 0.219969248299, which is the same as multiplying by 4.54609.
Which is the bigger unit, the liter per minute or the imperial gallon per minute?
The imperial gallon per minute. One liter per minute is only 0.219969 of a imperial gallon per minute, so it takes 4.54609 liters 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 liter per minute?
The flow unit for taps, showers and medical oxygen.
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 L/min to gpm in my head?
Plenty of people do this in their head: divide by 4.5 instead of using the exact factor 0.2199692483. At 100 that shortcut gives 22.222222 imperial gallons per minute, off by 0.2253 imperial gallons per minute or about 1.02%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Liters Per Minute to imperial gallons per minute reference tables
| Liters Per Minute | Imperial Gallons Per Minute |
|---|---|
| 0.5 L/min | 0.109985 gpm |
| 1 L/min | 0.219969 gpm |
| 2 L/min | 0.439938 gpm |
| 3 L/min | 0.659908 gpm |
| 5 L/min | 1.09985 gpm |
| 10 L/min | 2.19969 gpm |
| 20 L/min | 4.39938 gpm |
| 25 L/min | 5.49923 gpm |
| 50 L/min | 10.9985 gpm |
| 75 L/min | 16.4977 gpm |
| 100 L/min | 21.9969 gpm |
| 250 L/min | 54.9923 gpm |
| 500 L/min | 109.985 gpm |
| 1000 L/min | 219.969 gpm |
| 5000 L/min | 1099.85 gpm |
Exact factor: 1 liter per minute = 0.219969248299 imperial gallons per minute.
| Quantity | L/min | gpm |
|---|---|---|
| A dripping tap | 0.006 L/min | 0.00132 gpm |
| A bathroom tap | 6 L/min | 1.32 gpm |
| A shower head | 9.6 L/min | 2.112 gpm |
| A garden hose | 18 L/min | 3.959 gpm |
| A fire hydrant | 3600 L/min | 791.9 gpm |
| The Thames at London | 3.9e+06 L/min | 8.579e+05 gpm |
Published reference values, converted with the same factor this page uses.