Conversion Formula
$$Q_{\text{L/s}} = Q_{\text{GPM}} \times 0.06309$$
Multiply the flow in GPM by 0.06309 to get liters per second.
GPM to L/s Conversion Table
| US Gallon per Minute (GPM) | Liter per Second (L/s) |
|---|---|
| 0.1 | 0.00630902 |
| 0.5 | 0.0315451 |
| 1 | 0.0630902 |
| 2 | 0.12618 |
| 5 | 0.315451 |
| 10 | 0.630902 |
| 25 | 1.57726 |
| 50 | 3.15451 |
| 100 | 6.30902 |
| 250 | 15.7725 |
| 500 | 31.5451 |
| 1,000 | 63.0902 |
GPM to L/s in Engineering
Flow rate conversions are critical for water resources, wastewater treatment, HVAC, and piping design. Civil engineers commonly work with GPM, CFS, and MGD, while mechanical engineers often need CFM for air handling systems.
US Gallon per Minute: Most common US unit for piping, pump, and plumbing flow rates. Essential for fire protection design.
Liter per Second: Widely used metric flow rate unit for water distribution, fire protection, and plumbing design.