Pool pump run time calculator
PROHours to turn over your pool volume once.
Short answer: Hours = gallons ÷ (gpm × 60). 20,000 gal ÷ (40 gpm × 60) = 8.3 hr / turnover. Enter your measurements above and the pool pump run time calculator returns the quantity, unit conversions and an estimated cost instantly, in imperial or metric — no sign-up needed.
What do you need to measure?
What is the answer?
Hours / turnover
8.3
Daily runtime
8.3 hr
How does the pool pump run time calculator work?
Hours = gallons ÷ (gpm × 60).
What does a worked example look like?
20,000 gal ÷ (40 gpm × 60) = 8.3 hr / turnover.
What do people ask most?
›Turnovers per day?
1 is standard; 2 for heavy bather load or hot climates.
Which pool calculator should you use next?
Where can you learn more?
Read field notes on estimating and materials, or browse every calculator we make.