What is the formula for calculating gallons per day (GPD) from gallons per minute (GPM)?

To convert gallons per minute (GPM) to gallons per day (GPD), you need to understand the time conversion involved. There are 60 minutes in an hour and 24 hours in a day, which means there are a total of 1,440 minutes in a day (60 minutes x 24 hours).

Therefore, when you multiply the flow rate in GPM by the number of minutes in a day (1,440), you effectively convert the flow from a per-minute basis to a per-day basis. This gives you the total volume of gallons processed or used over an entire day, making the formula GPD = GPM × 1,440.

This understanding is crucial in wastewater management, where daily flow rates are often required for regulatory compliance and operational planning.