Milliliter per Second to Liter per Hour (mL/s to LPH)
Convert mL/s to LPH — Flow Rate converter
One milliliter per second equals 3.6 LPH, so to convert milliliters per second to liters per hour you multiply the value by 3.6. A milliliter per second is larger than a liter per hour — going the other way, 1 LPH = 0.27777778 mL/s. For example, 10 mL/s = 36 LPH and 50 mL/s = 180 LPH.
1 mL/s = 3.6 LPH
Milliliter per Second to Liter per Hour formula
1 Milliliter per Second = 3.6 LPH
Worked examples
- 25 mL/s = 90 LPH
- 100 mL/s = 360 LPH
Milliliter per Second to Liter per Hour conversion table
| Milliliter per Second (mL/s) | Liter per Hour (LPH) |
|---|---|
| 1 | 3.6 |
| 2 | 7.2 |
| 3 | 10.8 |
| 5 | 18 |
| 8 | 28.8 |
| 10 | 36 |
| 12 | 43.2 |
| 15 | 54 |
| 20 | 72 |
| 25 | 90 |
| 50 | 180 |
| 100 | 360 |
| 250 | 900 |
| 500 | 1800 |
| 1000 | 3600 |
Which gallon, and which trade
The single most expensive mistake in flow conversion is the gallon. A US liquid gallon is 3.785411784 litres; an imperial gallon is 4.54609 litres. US GPM and imperial GPM differ by about 20%, and pump datasheets frequently do not say which one they mean. Check the manufacturer's country of origin before trusting a GPM figure.
Different trades default to different units for the same physical quantity: HVAC and compressed air work in CFM, plumbing and pumps in GPM or LPM, and process and water engineering in m³/h or L/s. A specification that mixes them is usually quoting different equipment, not different flows. On this page, 1 mL/s = 3.6 LPH.
Frequently asked questions
How many liters per hour are in one milliliter per second?
One milliliter per second equals 3.6 liters per hour (LPH).
How many milliliters per second are in one liter per hour?
One liter per hour equals 0.27777778 milliliters per second (mL/s).
How do you convert milliliters per second to liters per hour?
1 Milliliter per Second = 3.6 LPH. Use the calculator above for any value.
What is 5 mL/s in LPH?
5 mL/s = 18 LPH.
What is 100 mL/s in LPH?
100 mL/s = 360 LPH.
What is 10 mL/s in LPH?
10 mL/s = 36 LPH.
What is 20 mL/s in LPH?
20 mL/s = 72 LPH.
What is 50 mL/s in LPH?
50 mL/s = 180 LPH.
What is 500 mL/s in LPH?
500 mL/s = 1800 LPH.
Is a milliliter per second bigger than a liter per hour?
Yes. A milliliter per second is larger — one milliliter per second equals 3.6 liters per hour (LPH).