Enter the m3/h or LPM into the calculator to convert to the other value.
m³/h to LPM Formula
The conversion uses a fixed factor because 1 cubic meter equals 1,000 liters and 1 hour equals 60 minutes.
LPM = m3h * 1000 / 60 = m3h * 16.6667
Reverse direction:
m3h = LPM * 0.06
Volume divided by time mode:
Q = V / t
- LPM: flow rate in liters per minute
- m3h: flow rate in cubic meters per hour
- Q: flow rate (converted to m³/h, then to LPM)
- V: volume passed through
- t: elapsed time
The calculator has three modes. m³/h → LPM multiplies your input by 16.6667. LPM → m³/h multiplies by 0.06. Volume ÷ Time normalizes any volume unit to m³ and any time unit to hours, divides, then reports the equivalent in LPM and other common units.
Reference Tables
Common conversions for quick lookup:
| m³/h | LPM (L/min) | L/s | GPM (US) |
|---|---|---|---|
| 0.5 | 8.333 | 0.139 | 2.20 |
| 1 | 16.667 | 0.278 | 4.40 |
| 2 | 33.333 | 0.556 | 8.81 |
| 5 | 83.333 | 1.389 | 22.02 |
| 10 | 166.667 | 2.778 | 44.03 |
| 25 | 416.667 | 6.944 | 110.08 |
| 50 | 833.333 | 13.889 | 220.17 |
| 100 | 1,666.67 | 27.778 | 440.34 |
Typical flow rates by application:
| Application | m³/h | LPM |
|---|---|---|
| Kitchen faucet | 0.5 – 0.9 | 8 – 15 |
| Shower head | 0.5 – 1.0 | 9 – 17 |
| Garden hose | 1.2 – 2.4 | 20 – 40 |
| Domestic well pump | 2 – 6 | 33 – 100 |
| Pool circulation pump | 5 – 20 | 83 – 333 |
| HVAC chilled water (small) | 10 – 50 | 167 – 833 |
| Industrial process pump | 50 – 500 | 833 – 8,333 |
Worked Examples
Example 1. A pump is rated at 7.5 m³/h. Convert to LPM.
LPM = 7.5 × 16.6667 = 125 L/min.
Example 2. A tank holds 600 liters and drains in 4 minutes. Find the flow in m³/h and LPM.
LPM = 600 / 4 = 150 L/min. m³/h = 150 × 0.06 = 9 m³/h.
FAQ
Why multiply by 16.6667? One m³/h equals 1000 liters spread across 60 minutes, so 1000 ÷ 60 = 16.6667 L/min.
Does the fluid type matter? No. Volumetric flow conversion is independent of density, temperature, or pressure. If you need mass flow (kg/h), you must multiply by density separately.
How do I convert LPM to m³/h quickly in my head? Divide by 16.67, or multiply by 0.06. For a rough estimate, divide LPM by 17.
What is the difference between US and Imperial GPM? A US gallon is 3.785 liters and an Imperial gallon is 4.546 liters. The calculator handles both as separate input units.