Pool Chlorine Table: Chlorine needed by Pool volume
Reference table of chlorine needed for Pool Chlorine across a range of pool volume values — exact, engine-computed figures you can read off at a glance.
Pool Chlorine Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Chlorine needed
100.0
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Pool Chlorine Calculator
The Pool Chlorine Calculator works out your chlorine needed in an instant. Enter pool volume and dose per 1000 litres and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the pool volume.
- Enter the dose per 1000 litres.
- Read off your chlorine needed — the calculator updates automatically, with no button to press.
Formula
The Pool Chlorine Calculator uses the formula:
Chlorine needed = Pool volume ÷ 1000 × Dose per 1000 litres
Worked example
For example, with pool volume of 50,000 litres and dose per 1000 litres of 2 g, the chlorine needed is 100.0.
| Pool volume | 50,000 litres |
|---|---|
| Dose per 1000 litres | 2 g |
| Chlorine needed | 100.0 |
|---|
Results are estimates for educational use, not professional advice.
Key terms explained
- Volume
- The amount of three-dimensional space an object occupies, measured in cubic units.
Frequently asked questions
Multiply the volume in thousands of litres by the dose per 1,000 litres. A 50,000-litre pool at 2 g per 1,000 litres needs 100 g.
Free chlorine of about 1 to 3 ppm is common. Test the water and dose to reach the target.
Yes. Different chlorine products vary in available chlorine, so follow the label dose for your specific product.
Often in the evening, so sunlight does not burn it off before it works, and with the pump running to circulate it.
The Pool Chlorine Calculator uses the formula: Chlorine needed = Pool volume ÷ 1000 × Dose per 1000 litres. For example, with pool volume of 50,000 litres and dose per 1000 litres of 2 g, the chlorine needed is 100.0.
Enter the pool volume. Enter the dose per 1000 litres. Read off your chlorine needed — the calculator updates automatically, with no button to press.
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