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.