This page converts liters per hour into cubic meters per second using the factor 2.777777778e-07, and shows the reverse figure alongside it. Both units measure volumetric flow, which is why one number does the whole job.
The rating unit for dosing pumps, drip irrigation and small boilers. The SI unit of volumetric flow, used for rivers and large ducts.
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 cubic meters per second so the number you get has something to be compared against.
The formula
liters per hour- The amount you are converting, in liters per hour
2.77777777778e-07- The exact number of cubic meters per second in one liter per hour
cubic meters per second- The converted result
How it works, step by step
- Enter the value in liters per hour.
- It is multiplied by 2.77777777778e-07, the exact factor between the two units.
- The answer is shown in cubic meters per second, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A garden hose: 1080 L/h in cubic meters per second
At 1080 L/h (a garden hose), the same quantity in cubic meters per second is 1080 × 2.77778e-07 = 0.0003 m³/s. One liter per hour is 2.77778e-07 cubic meters per second, so the numbers shrink as expected.
A fire hydrant: 2.16e+05 L/h in cubic meters per second
Take a fire hydrant, roughly 2.16e+05 L/h. The conversion is a single multiplication — 2.16e+05 × 2.77778e-07 — giving 0.06 m³/s. Because the relationship is proportional, doubling the input doubles the answer to 0.12 m³/s.
How to read your score
Frequently asked questions
How many cubic meters per second are in one liter per hour?
Exactly 2.77777777778e-07. 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 cubic meters per second?
cubic meters per second = liters per hour × 2.77777777778e-07. Reversed, liters per hour = cubic meters per second ÷ 2.77777777778e-07, which is the same as multiplying by 3,600,000.
Which is the bigger unit, the liter per hour or the cubic meter per second?
The cubic meter per second. One liter per hour is only 2.77778e-07 of a cubic meter per second, so it takes 3.6e+06 liters per hour to make one cubic meter per second.
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 cubic meter per second?
The SI unit of volumetric flow, used for rivers and large ducts.
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.
Liters Per Hour to cubic meters per second reference tables
| Liters Per Hour | Cubic Meters Per Second |
|---|---|
| 0.5 L/h | 1.38889e-07 m³/s |
| 1 L/h | 2.77778e-07 m³/s |
| 2 L/h | 5.55556e-07 m³/s |
| 3 L/h | 8.33333e-07 m³/s |
| 5 L/h | 1.38889e-06 m³/s |
| 10 L/h | 2.77778e-06 m³/s |
| 20 L/h | 5.55556e-06 m³/s |
| 25 L/h | 6.94444e-06 m³/s |
| 50 L/h | 1.38889e-05 m³/s |
| 75 L/h | 2.08333e-05 m³/s |
| 100 L/h | 2.77778e-05 m³/s |
| 250 L/h | 6.94444e-05 m³/s |
| 500 L/h | 0.000138889 m³/s |
| 1000 L/h | 0.000277778 m³/s |
| 5000 L/h | 0.00138889 m³/s |
Exact factor: 1 liter per hour = 2.77777777778e-07 cubic meters per second.
| Quantity | L/h | m³/s |
|---|---|---|
| A dripping tap | 0.36 L/h | 1e-07 m³/s |
| A bathroom tap | 360 L/h | 0.0001 m³/s |
| A shower head | 576 L/h | 0.00016 m³/s |
| A garden hose | 1080 L/h | 0.0003 m³/s |
| A fire hydrant | 2.16e+05 L/h | 0.06 m³/s |
| The Thames at London | 2.34e+08 L/h | 65 m³/s |
Published reference values, converted with the same factor this page uses.