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Flow & Turnover Calculator

Convert between flow rate and turnover time for your pool volume.

Turnover is arithmetic, not proof of clean water

One mathematical turnover does not prove the water is safe, adequately filtered or adequately sanitized, and it is not a universal runtime prescription. Water mixes rather than passing through in a neat single pass, and sanitizer level, filter condition and circulation dead spots all matter more than the number below.

What do you want to work out?
gal
GPM

Measured with a flow meter, or read from the pump curve at your system's head.

How this is calculated

  • Turnover hours = gallons ÷ (GPM × 60)
  • Required GPM = gallons ÷ (hours × 60)