One liter per minute is exactly 380.4078338 US gallons per day, so converting liters per minute to US gallons per day 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 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. 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 day so the number you get has something to be compared against.
The formula
liters per minute- The amount you are converting, in liters per minute
380.407833846- The exact number of US gallons per day in one liter per minute
US gallons per day- The converted result
How it works, step by step
- Enter the value in liters per minute.
- It is multiplied by 380.407833846, the exact factor between the two units.
- The answer is shown in US gallons per day, 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 US gallons per day
Take a fire hydrant, roughly 3600 L/min. The conversion is a single multiplication — 3600 × 380.408 — giving 1.36947e+06 GPD. Because the relationship is proportional, doubling the input doubles the answer to 2.73894e+06 GPD.
A shower head: 9.6 L/min in US gallons per day
A shower head comes to about 9.6 L/min. Multiplying by the factor: 9.6 × 380.408 = 3651.92 GPD. Dividing the answer back by 380.408 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 day are in one liter per minute?
Exactly 380.407833846. 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 US gallons per day?
US gallons per day = liters per minute × 380.407833846. Reversed, liters per minute = US gallons per day ÷ 380.407833846, which is the same as multiplying by 0.00262875764122.
Which is the bigger unit, the liter per minute or the US gallon per day?
The liter per minute. One liter per minute equals 380.408 US gallons per day.
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 US gallon per day?
The rating unit for reverse-osmosis membranes and water demand.
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 GPD in my head?
Plenty of people do this in their head: multiply by 380 instead of using the exact factor 380.4078338. At 100 that shortcut gives 38,000 US gallons per day, off by 40.78 US gallons per day or about 0.11%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Liters Per Minute to US gallons per day reference tables
| Liters Per Minute | Us Gallons Per Day |
|---|---|
| 0.5 L/min | 190.204 GPD |
| 1 L/min | 380.408 GPD |
| 2 L/min | 760.816 GPD |
| 3 L/min | 1141.22 GPD |
| 5 L/min | 1902.04 GPD |
| 10 L/min | 3804.08 GPD |
| 20 L/min | 7608.16 GPD |
| 25 L/min | 9510.2 GPD |
| 50 L/min | 19,020.4 GPD |
| 75 L/min | 28,530.6 GPD |
| 100 L/min | 38,040.8 GPD |
| 250 L/min | 95,102 GPD |
| 500 L/min | 190,204 GPD |
| 1000 L/min | 380,408 GPD |
| 5000 L/min | 1.90204e+06 GPD |
Exact factor: 1 liter per minute = 380.407833846 US gallons per day.
| Quantity | L/min | GPD |
|---|---|---|
| A dripping tap | 0.006 L/min | 2.282 GPD |
| A bathroom tap | 6 L/min | 2282 GPD |
| A shower head | 9.6 L/min | 3652 GPD |
| A garden hose | 18 L/min | 6847 GPD |
| A fire hydrant | 3600 L/min | 1.369e+06 GPD |
| The Thames at London | 3.9e+06 L/min | 1.484e+09 GPD |
Published reference values, converted with the same factor this page uses.