One liter per hour is exactly 0.2641720523 US gallons per hour, so converting liters per hour to US gallons per hour 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.
Used for fuel burn and small pumps. The rating unit for dosing pumps, drip irrigation and small boilers.
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. The tables underneath give both a plain step-by-step lookup and a list of real quantities expressed in US gallons per hour, so you can sanity-check whether your answer is a plausible size.
The formula
liters per hour- The amount you are converting, in liters per hour
0.264172052344- The exact number of US gallons per hour in one liter per hour
US gallons per hour- The converted result
How it works, step by step
- Enter the value in liters per hour.
- It is multiplied by 0.264172052344, the exact factor between the two units.
- The answer is shown in US gallons per hour, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A shower head: 576 L/h in US gallons per hour
Take a shower head, roughly 576 L/h. The conversion is a single multiplication — 576 × 0.264172 — giving 152.163 GPH. Because the relationship is proportional, doubling the input doubles the answer to 304.326 GPH.
A garden hose: 1080 L/h in US gallons per hour
At 1080 L/h (a garden hose), the same quantity in US gallons per hour is 1080 × 0.264172 = 285.306 GPH. One liter per hour is 0.264172 US gallons per hour, so the numbers shrink as expected.
How to read your score
Frequently asked questions
How many US gallons per hour are in one liter per hour?
Exactly 0.264172052344. 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 hour to US gallons per hour?
US gallons per hour = liters per hour × 0.264172052344. Reversed, liters per hour = US gallons per hour ÷ 0.264172052344, which is the same as multiplying by 3.78541178421.
Which is the bigger unit, the liter per hour or the US gallon per hour?
The US gallon per hour. One liter per hour is only 0.264172 of a US gallon per hour, so it takes 3.78541 liters per hour to make one US gallon per hour.
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 hour?
The rating unit for dosing pumps, drip irrigation and small boilers.
What is a US gallon per hour?
Used for fuel burn and small pumps.
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/h to GPH in my head?
Plenty of people do this in their head: divide by 3.8 instead of using the exact factor 0.2641720523. At 100 that shortcut gives 26.315789 US gallons per hour, off by 0.1014 US gallons per hour or about 0.38%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Liters Per Hour to US gallons per hour reference tables
| Liters Per Hour | Us Gallons Per Hour |
|---|---|
| 0.5 L/h | 0.132086 GPH |
| 1 L/h | 0.264172 GPH |
| 2 L/h | 0.528344 GPH |
| 3 L/h | 0.792516 GPH |
| 5 L/h | 1.32086 GPH |
| 10 L/h | 2.64172 GPH |
| 20 L/h | 5.28344 GPH |
| 25 L/h | 6.6043 GPH |
| 50 L/h | 13.2086 GPH |
| 75 L/h | 19.8129 GPH |
| 100 L/h | 26.4172 GPH |
| 250 L/h | 66.043 GPH |
| 500 L/h | 132.086 GPH |
| 1000 L/h | 264.172 GPH |
| 5000 L/h | 1320.86 GPH |
Exact factor: 1 liter per hour = 0.264172052344 US gallons per hour.
| Quantity | L/h | GPH |
|---|---|---|
| A dripping tap | 0.36 L/h | 0.0951 GPH |
| A bathroom tap | 360 L/h | 95.1 GPH |
| A shower head | 576 L/h | 152.2 GPH |
| A garden hose | 1080 L/h | 285.3 GPH |
| A fire hydrant | 2.16e+05 L/h | 5.706e+04 GPH |
| The Thames at London | 2.34e+08 L/h | 6.182e+07 GPH |
Published reference values, converted with the same factor this page uses.