Pool Turnover & Flow Rate Calculator
Use a measured flow rate at the pump's actual operating setting and enter pool volume and daily run hours. The calculator divides gallons by GPM × 60 to estimate a theoretical volume-equivalent turnover time. It can also show the flow for a period you choose.
Illustrative example: At 50 GPM, 20,000 gallons is one volume equivalent in about 6.67 hours. Running 8 hours circulates 24,000 gallons, or 1.2 volume equivalents; that does not mean every gallon passed through the filter.
Read the pool circulation guide for other factors that affect flow.
Put the flow estimate in context
Use the result as a flow target
Compare theoretical circulation flow with measured flow and the documented requirements of the filter, heater and cleaner. Pool conditions and equipment requirements should guide the final schedule.
Pool Turnover & Flow Rate
Calculate a target circulation flow from pool gallons and your chosen turnover period.
Theoretical volume equivalents; this does not say that every gallon has passed the filter or prescribe run time.
