How the Flow Rate Converter Works
This tool instantly converts a value between all major volumetric flow rate units: liters per minute, cubic centimeters per hour, cubic meters per hour, gallons per minute, and more.
How the Conversion Works
All conversions pass through liters per minute (L/min) as the base unit. The entered value is first converted to L/min, then from L/min to all other units.
The conversion combines two factors:
- Volume: 1 L = 1,000 mL = 1,000 cm³ = 0.001 m³
- Time: 1 h = 60 min = 3,600 s
Conversion Factors Table
| Unit | Equivalence in L/min |
|---|---|
| 1 L/min | 1 |
| 1 L/h | 0.01667 |
| 1 L/s | 60 |
| 1 mL/min (= cm³/min) | 0.001 |
| 1 cm³/h (= mL/h) | 0.00001667 |
| 1 m³/h | 16.667 |
| 1 GPM (US gal/min) | 3.785 |
| 1 CFM (ft³/min) | 28.317 |
Practical Applications
Volumetric flow rate is used in many contexts:
- Plumbing: pipe sizing, pumps, and valves (L/min, m³/h)
- Irrigation: sprinkler and drip system flow rates (L/h, GPM)
- HVAC: airflow in ducts (CFM, m³/h)
- Medical: oxygen flow meters and IV fluids (mL/min, L/min)
- Industrial: fluid dosing in chemical and food processes (cm³/h, L/h)