CYA Level Calculator

Calculate how much cyanuric acid (CYA) to add to raise your pool's CYA levels by a specific amount.

Pool Information

Pool Volume

Current CYA Level (ppm)

Target CYA Level (ppm)

Ideal Range: 30-50 ppm for most pools, 30-80 ppm for saltwater pools

Purpose: Protects chlorine from UV degradation, extending its effectiveness

Testing: Test CYA levels monthly and after adding new water

Note: CYA can only be reduced by diluting pool water (partial drain and refill)