Aquarium Treatment Dose Calculator
Fill in the values and the answer updates as you type.
How the Aquarium Treatment Dose Calculator works
Total dose = water volume ÷ volume covered by the label dose × label dose. Dose for the volume you are actually treating, so for a water change you can treat only the new water. Always follow the label, do not overdose, and remember that some medications require removing carbon from the filter. Teaspoons are US teaspoons of 4.929 ml, and drops assume 20 per ml. Example: A label that gives 5 ml per 40 liters needs 25 ml for 200 liters.
Inputs and results
The Aquarium Treatment Dose Calculator takes 3 inputs and gives 3 results.
What you enter
- Water volume to treat (liters) — starts at 200.
- Dose on the label (ml) — starts at 5.
- Label dose covers (liters) — starts at 40.
What you get
- Total dose (ml)
- Total dose (US teaspoons)
- Total dose (drops, 20 per ml)
Example: Aquarium Treatment Dose Calculator with the starting values
With water volume to treat 200 liters, dose on the label 5 ml and label dose covers 40 liters, the calculator returns:
| Total dose (ml) | 25 |
|---|---|
| Total dose (US teaspoons) | 5.1 |
| Total dose (drops, 20 per ml) | 500 |
Change any value above and the results update straight away.
Aquarium Treatment Dose Calculator FAQ
How do I use the Aquarium Treatment Dose Calculator?
Enter water volume to treat, dose on the label and label dose covers in the fields, then read total dose (ml), total dose (us teaspoons) and total dose (drops, 20 per ml) in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Aquarium Treatment Dose Calculator calculate?
Scale a water conditioner or medication dose to your tank volume. It returns total dose (ml), total dose (us teaspoons) and total dose (drops, 20 per ml) from the 3 values you provide.
What values does the Aquarium Treatment Dose Calculator start with?
It opens with water volume to treat 200 liters, dose on the label 5 ml and label dose covers 40 liters so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Aquarium Treatment Dose Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Aquarium Treatment Dose Calculator for medical or health decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm medical or health decisions with a qualified professional. See the Disclaimer for more.