Chlorine PPM

Calculate Chlorine addition for pools.

Verified ToolUpdated: January 10, 2026
Switch to Chlorine Dose to PPM
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Chlorine (oz)

Methodology & Sources

This calculator assumes standard strength Liquid Chlorine. It uses the breakdown that roughly 1 oz of 12% chlorine raises 10,000 gallons by 1 PPM.

The underlying formula used is:

Variable depending on chlorine type. Approx for 12% liquid: (Vol * PPM) / 90000

References

  • TroubleFreePool Guidelines

Frequently Asked Questions

Does this work for tablets?

No, tablets (Trichlor) add CYA as well. This generic estimation is best for Liquid Chlorine (Sodium Hypochlorite).

How often should I shock?

Weekly or when combined chlorine > 0.5 PPM.
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Ensuring every tool adheres to ASTM/IUPAC standards. Committed to providing precise, transparent, and verifiable engineering resources.

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Formulas and logic verified against IUPAC and ASTM standards. Maintained and tested by technical editors.

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