Pool Calculator

Your details

Choose the shape that best matches your pool. Kidney uses an approximation for irregular pools.
For circular pools, enter the diameter. For kidney pools, enter the longest dimension.
ft
Not used for circular pools (diameter covers both dimensions).
ft
Depth at the shallowest point. If your pool has a flat bottom, enter the same value for both depths.
ft
Depth at the deepest point. For a flat-bottom pool, set this equal to the shallow depth.
ft
Your pump's flow rate in gallons per minute. Check the pump label or manual.
GPM
Typical garden hose delivers 5-10 GPM. Time how long it takes to fill a known container.
GPM
Test your pool water with a test kit or test strips to get the current free chlorine (FC) reading.
ppm
Shock level is 10 ppm. Normal maintenance is 2-4 ppm. Use 10 ppm for shocking.
ppm
The ideal range is 7.4-7.6. Test your pool water with a test kit.
The ideal range is 7.2-7.6. Pool professionals commonly aim for 7.4.
Ideal range is 80-120 ppm. TA buffers pH against rapid swings.
ppm
Most pools target 80-120 ppm. Saltwater pools do best at 80-100 ppm.
ppm
Pool volume (US gallons)Excellent circulation
15,990gal

Total water volume in US gallons

Pool volume (litres)60,527L
Volume (cubic feet)2,137.5ft³
Average depth4.75
Chlorine shock dose46.1oz
Chlorine shock dose2.88lb
pH adjuster dose51.2oz
pH adjustment directionAdd dry acid (lower pH)
Alkalinity adjuster dose107.5oz
Alkalinity adjustmentAdd sodium bicarbonate (raise TA)
Pump turnover time5.9hrs
Fill time (hose)33.3hrs
5.9 hrs
Excellent<6Good6-8Acceptable8-12Poor12+
US Gallons15,990
Litres60,527

Your pool holds about 15,990 gallons.

  • Your rectangular pool holds approximately 15,990 US gallons (60,527 litres).
  • Your pump circulates the full volume in 5.9 hours, which meets the recommended target of 8 hours or less per turnover cycle.
  • To shock this pool from 1 ppm to 10 ppm free chlorine, you need about 46.1 oz (2.88 lb) of 68% granular shock.
  • pH: add dry acid (lower ph) - approximately 51.2 oz needed.
  • Alkalinity: add sodium bicarbonate (raise ta) - approximately 107.5 oz needed.

Next stepAlways test your pool water before adding chemicals, and re-test 24-48 hours after treatment. For accurate dosing, use a quality test kit rather than test strips alone.

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