Start with the question you need to answer
Use the volume calculator for pool dimensions or a manufacturer capacity. The combined chemical calculator shares that volume across five treatments. The filling tools use only the water still needed, which may be less than the full pool capacity.
Use current measurements
Apply a saved capacity when it still matches your pool, then enter fresh water-test readings and the settings for your current product. Chemical results are separate additions, not instructions to add multiple products together.
Sources & calculation notes
Check the original source for product-specific instructions and current details.
- NIST: SI units of volumeChecked 2026-10-27
- Taylor: Complete kit instructions #5165, acid/base demand and treatment-table methodChecked 2026-10-27