Conversions
Flow Unit Converter
Convert between gallons per minute, million gallons per day, cubic feet per second, litres per second, and cubic metres per hour.
Calculated reference results
- Gallons per minute
- 500.000gpm
- Million gallons per day
- 0.720000MGD
- Gallons per day
- 720,000gpd
- Gallons per hour
- 30,000.0gph
- Cubic feet per second
- 1.11400cfs
- Litres per second
- 31.5451L/s
- Cubic metres per hour
- 113.562m3/h
- Cubic metres per day
- 2,725.50m3/d
The arithmetic
- 500.0000 gpm = 500.000 gpm, then converted from there
What this does not account for
- US gallons, not imperial. An imperial gallon is about 1.2 US gallons and mixing the two produces a 20% error.
How this is calculated
Common flow conversions in water and wastewater work: one million gallons per day is 694.4 gallons per minute, one cubic foot per second is 448.8 gallons per minute, one litre per second is 15.85 gallons per minute, and one cubic metre per hour is 4.403 gallons per minute.
Assumptions and limitations built into this calculator
- US liquid gallons throughout.
Frequently asked questions
- How many gpm is 1 MGD?
- 694.4 gallons per minute. A million gallons divided by 1440 minutes in a day.
Direct contact
Have a controls question?
Reach Eric Sullivan directly about anything on this site, a controls or automation topic, or one of his personal projects.