Trichlor dose calculator
PROTrichlor tabs (90%) to maintain free chlorine.
Short answer: oz = (gallons ÷ 10,000) × 0.13 × ppm to raise. 20,000 gal + 3 ppm FC = 0.78 oz trichlor. Enter your measurements above and the trichlor dose calculator returns the quantity, unit conversions and an estimated cost instantly, in imperial or metric — no sign-up needed.
What do you need to measure?
What is the answer?
Trichlor
0.78 oz
CYA added
1.8 ppm
pH impact
Lowers pH & TA
How does the trichlor dose calculator work?
oz = (gallons ÷ 10,000) × 0.13 × ppm to raise.
What does a worked example look like?
20,000 gal + 3 ppm FC = 0.78 oz trichlor.
What do people ask most?
›Stabilized?
Yes — trichlor adds CYA; monitor it monthly.
Which pool calculator should you use next?
Where can you learn more?
Read field notes on estimating and materials, or browse every calculator we make.
What should you read before you order materials?
Field notes from real jobs that explain the numbers behind this calculator.
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