Pool pump run time calculator
PROHours to turn over your pool volume once.
Inputs
Result
Hours / turnover
8.3
Daily runtime
8.3 hr
The formula
Hours = gallons ÷ (gpm × 60).
Worked example
20,000 gal ÷ (40 gpm × 60) = 8.3 hr / turnover.
Frequently asked
›Turnovers per day?
1 is standard; 2 for heavy bather load or hot climates.