From this site

One project, every trade

Each calculator adds its lines to a single estimate — consolidated BOM, schedule and cash-flow included.

Open My Project →

Pool Pump Turnover Calculator

Find the flow rate and daily run time needed to turn the pool over properly.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-26 · v1.0.0

Market
Imperial · sales tax

Flow rate required

6.25 m³/h

High confidence

Flow required at the pump. The pump must deliver this against the system's actual head, which is a separate calculation.

Litres per minute
27.52 gal/min
US gallons per minute
27.52 GPM
Volume circulated per day
65.4 yd³
Turnover time
24 hours

For the dimensions entered, expect a flow rate required of 6.25 m³/h. Note that pool volume sits at the low end of the range this calculator was checked against, so treat the output as indicative rather than settled. Set for United States against IRC 2024. The market selector changes both the units and the code cited.

Add the equipment this sizes

This result is a specification — 6.25 m³/h — not a quantity. Put the thing it sizes into your project: how many, what you call it, and your supplier’s price.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Residential pools are commonly designed for one to two complete turnovers per day — APSP/PHTA design standards
  • Turnover rate = pool volume ÷ desired turnover time

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Frequently asked questions

How many turnovers does a pool need?
One a day is adequate for a lightly used residential pool; two where the bather load is high or the water is warm. Commercial and public pools are regulated and need considerably more. Turnover is a circulation target, not a filtration guarantee — the water does not neatly pass through once.
Is running the pump longer at low speed better?
Substantially, on a variable-speed pump. Power varies with the cube of speed, so halving the speed uses about an eighth of the power while moving half the flow — roughly a quarter of the energy for the same turnover. Longer and slower is both cheaper and better for filtration, which works better at low velocity.
Why does my pump not achieve the rated flow?
Because the rating is at a specific head, and your system has more. Filter resistance, heater, long or undersized pipe and every elbow add up. Read the pump curve at your system's actual head rather than trusting the headline figure.