Pool Volume & Chemical Dosing Calculator

How It Works

1. Select Pool Shape

   Choose a simple geometric prompt for rectangular, round, oval, kidney/freeform, L-shaped, or direct spa volume. Metered fill data, builder plans, irregular geometry, benches, stairs, shelves, coves, and connected spas remain unresolved.

2. Review Volume Prompt

   Use the gallon result as a dose-scaling input only. When dose accuracy matters, verify the pool volume against water-meter fill, measured sectional volume, builder records, or a qualified service review.

3. Enter Current Readings

   Enter current FC, CC, pH, TA, CH, CYA, and salt readings from a suitable test method. The app does not validate test-kit range, calibration, sample location, dilution tests, operator technique, or interference.

4. Read Local Prompt Bands

   Use the target rows as local review prompts. Public venues, commercial pools, local health code, CDC/MAHC adoption, selected surface and equipment, salt-cell manufacturer data, and CPO review can require different values.

5. Review Dose Prompts

   Dose rows are local product-strength prompts per 10,000 gallons. Current product labels, SDS, EPA registration, product age, density, active ingredient, PPE, circulation, and retesting control actual additions.

6. Resolve Safety and Code Gaps

   Breakpoint, high-FC, CYA dilution, drain/refill, storage, chemical handling, and bather reopening decisions require the facility procedure, local code, health department, product label, and qualified review.

Built For

• Pool service technicians organizing source gaps before reviewing product labels and test results
• Homeowners checking whether a pool-volume assumption is reasonable before contacting a pool professional
• Pool builders documenting simple volume assumptions before water-meter or builder-plan verification
• Aquatic facility staff separating local prompt rows from health-code, operator, and recordkeeping requirements
• Salt-water pool owners identifying salt-cell manufacturer and test-method gaps before adding salt

Assumptions

• Dose rows are local prompts for assumed product strengths and do not verify actual product concentration, density, age, label, or SDS.
• Readings are assumed current and valid; test-kit range, calibration, sample location, dilution, interference, and operator technique are not checked.
• Volume calculations assume simple geometry and do not model stairs, benches, shelves, coves, connected spas, or irregular slopes.

Limitations

• Does not determine public-pool compliance, closure, reopening, contamination response, recordkeeping, CPO requirements, or health-department acceptance.
• Does not calculate LSI/CSI, carbonate alkalinity correction, temperature effects, metals, phosphates, borates, organic demand, algae cleanup, or automated-controller settings.
• Does not authorize chemical handling, mixing, storage, PPE, spill response, drain/refill, discharge, or hydrostatic safety decisions.

References

• CDC Model Aquatic Health Code (MAHC) source pointer - public aquatic venue model-code context; local adoption and AHJ control.
• CDC Pool Chemical Safety source pointer - storage, SDS, PPE, ventilation, and no-mixing safety context.
• EPA/FIFRA pool shock label guidance source pointer - product claims and use are controlled by EPA-approved labels.
• ANSI/PHTA/ICC-11 2026 source pointer - current public pool and spa water-quality standard context; licensed text required for exact rows.
• NSF/ANSI/CAN 50 source pointer - pool/spa equipment, chemical, controller, and test-device certification context.

Frequently Asked Questions