One US gallon per day is exactly 0.002628757641 liters per minute, so converting US gallons per day to liters 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 flow unit for taps, showers and medical oxygen. The rating unit for reverse-osmosis membranes and water demand.
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 liters per minute so the number you get has something to be compared against.
The formula
US gallons per day- The amount you are converting, in US gallons per day
0.00262875764122- The exact number of liters per minute in one US gallon per day
liters per minute- The converted result
How it works, step by step
- Enter the value in US gallons per day.
- It is multiplied by 0.00262875764122, the exact factor between the two units.
- The answer is shown in liters per minute, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A bathroom tap: 2280 GPD in liters per minute
At 2280 GPD (a bathroom tap), the same quantity in liters per minute is 2280 × 0.00262876 = 5.99357 L/min. One US gallon per day is 0.00262876 liters per minute, so the numbers shrink as expected.
A fire hydrant: 1.37e+06 GPD in liters per minute
Take a fire hydrant, roughly 1.37e+06 GPD. The conversion is a single multiplication — 1.37e+06 × 0.00262876 — giving 3601.4 L/min. Because the relationship is proportional, doubling the input doubles the answer to 7202.8 L/min.
How to read your score
Frequently asked questions
How many liters per minute are in one US gallon per day?
Exactly 0.00262875764122. 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 US gallons per day to liters per minute?
liters per minute = US gallons per day × 0.00262875764122. Reversed, US gallons per day = liters per minute ÷ 0.00262875764122, which is the same as multiplying by 380.407833846.
Which is the bigger unit, the US gallon per day or the liter per minute?
The liter per minute. One US gallon per day is only 0.00262876 of a liter per minute, so it takes 380.408 US gallons per day to make one liter 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 US gallon per day?
The rating unit for reverse-osmosis membranes and water demand.
What is a liter per minute?
The flow unit for taps, showers and medical oxygen.
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 GPD to L/min in my head?
Plenty of people do this in their head: divide by 380 instead of using the exact factor 0.002628757641. At 100 that shortcut gives 0.26315789 liters per minute, off by 0.0002821 liters per minute or about 0.11%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Us Gallons Per Day to liters per minute reference tables
| Us Gallons Per Day | Liters Per Minute |
|---|---|
| 0.5 GPD | 0.00131438 L/min |
| 1 GPD | 0.00262876 L/min |
| 2 GPD | 0.00525752 L/min |
| 3 GPD | 0.00788627 L/min |
| 5 GPD | 0.0131438 L/min |
| 10 GPD | 0.0262876 L/min |
| 20 GPD | 0.0525752 L/min |
| 25 GPD | 0.0657189 L/min |
| 50 GPD | 0.131438 L/min |
| 75 GPD | 0.197157 L/min |
| 100 GPD | 0.262876 L/min |
| 250 GPD | 0.657189 L/min |
| 500 GPD | 1.31438 L/min |
| 1000 GPD | 2.62876 L/min |
| 5000 GPD | 13.1438 L/min |
Exact factor: 1 US gallon per day = 0.00262875764122 liters per minute.
| Quantity | GPD | L/min |
|---|---|---|
| A dripping tap | 2.282 GPD | 0.006 L/min |
| A bathroom tap | 2282 GPD | 6 L/min |
| A shower head | 3652 GPD | 9.6 L/min |
| A garden hose | 6847 GPD | 18 L/min |
| A fire hydrant | 1.369e+06 GPD | 3600 L/min |
| The Thames at London | 1.484e+09 GPD | 3.9e+06 L/min |
Published reference values, converted with the same factor this page uses.