AQUARIUM CALCULATORS
The right dose.
Every time.
Accurate aquarium calculators, dosing guides and plain-language advice for a healthier, more stable tank.
Clear amounts. Visible assumptions.
Your calculation, explained
Choose a product and enter the water you’re actually dosing.
- Check the exact product and formulation.
- Use measured water, or make an explicit estimate.
- Review the amount, source and any schedule.
Checked Calculations
Tank volume, dosing and more
Product-Specific Guidance
For supported aquarium products
Practical Advice
Clear, easy-to-follow guides
Made for Your Aquarium
Measured water. Visible assumptions.
Popular Calculators
Quick, reliable dosing tools for the aquarium products you use.
A LITTLE LESS GUESSWORK
Know the amount.
Understand the next step.
A useful result is more than a number. Check the product instructions, see the assumptions and keep your treatment record together.
See how our calculations work →Check the bottle before the dose. Calculators scale the supported instructions. They do not diagnose illness, select a treatment or confirm livestock compatibility. Estimated volumes are labelled in your result.
Read the aquarium dosing handbook →