Conversion Formula
$$Q_{\text{CFS}} = Q_{\text{MGD}} \times 1.5472$$
Multiply the flow in MGD by 1.5472 to get cubic feet per second.
MGD to CFS Conversion Table
| Million Gallons per Day (MGD) | Cubic Foot per Second (CFS) |
|---|---|
| 0.1 | 0.154723 |
| 0.5 | 0.773614 |
| 1 | 1.54723 |
| 2 | 3.09446 |
| 5 | 7.73614 |
| 10 | 15.4723 |
| 25 | 38.6807 |
| 50 | 77.3614 |
| 100 | 154.723 |
| 250 | 386.807 |
| 500 | 773.614 |
| 1,000 | 1,547.23 |
MGD to CFS 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.
Million Gallons per Day: Standard US unit for water and wastewater treatment plant capacity. Essential for municipal engineering.
Cubic Foot per Second: Primary US unit for open channel flow, river discharge, and stormwater design. Used by USGS and FEMA.