Below, you’ll find a Pool Cyanuric Acid Calculator to help you determine the proper dosage for your pool.
Cyanuric acid (CYA), sometimes referred to as stabilizer or conditioner, protects your Free Chlorine (FC) from being consumed by sunlight. CYA sort of acts like an umbrella or sunscreen for your Free Chlorine. Without CYA your pool will not hold chlorine and will consequently turn green with algae.
On the other hand, if your pool has too much CYA, your Free Chlorine will not be effective and can also cause a green pool. We’ve provided a chart on this page that shows the optimal cyanuric acid levels along with the target free chlorine level.
Cyanuric Acid Calculator
CYA/Chlorine Chart
Traditional Chlorine Pools
| CYA Level (ppm) | Minimum FC (ppm) | Target FC (ppm) |
|---|---|---|
| 20* | 2 | 3-5 |
| 30 | 2 | 4-6 |
| 40 | 3 | 5-7 |
| 50 | 4 | 6-8 |
| 60 | 5 | 7-9 |
| 70* | 5 | 8-10 |
| 80* | 6 | 9-11 |
| 90* | 7 | 10-12 |
| 100* | 8 | 11-13 |
Salt Water Pools
| CYA Level (ppm) | Minimum FC (ppm) | Target FC (ppm) |
|---|---|---|
| 60* | 3 | 4 |
| 70 | 3 | 5 |
| 80 | 4 | 6 |
*Not Recommended
Source: TroubleFreePool.com
We hope this Pool Cyanuric Acid Calculator and CYA/Chlorine chart help you with determining the proper levels for your pool.
Want to learn more about Cyanuric Acid? Check out some of our other resources…
- How To Test Pool Cyanuric Acid (Stabilizer)
- The Relationship Between Chlorine and Cyanuric Acid
- What kind of chlorine do I use with high cyanuric acid?
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