THE QUIET TOOLS
Small calculations.
Better decisions.
Six free, no-account tools to take the guesswork out of tank sizing, water changes, feeding, stocking, heating, and temperature. No subscription, no black box.
Tank Volume Calculator
Calculate your aquarium's actual water capacity from dimensions — litres, US gallons, and Imperial gallons, plus weekly water change guidance.
Open tool →Water Change Calculator
Find out exactly how much water to replace. Enter your tank volume and change percentage to get a precise replacement amount.
Open tool →Feeding Calculator
Get a simple feeding recommendation based on fish type, size, and count. Built for beginners who want a clear routine.
Open tool →Stocking Calculator
Estimate how many fish your tank can safely hold. A rough reference tool — not an absolute rule — with responsible ranges.
Open tool →Heater Wattage Calculator
Determine the right heater power for your tank based on volume and the temperature gap between room and target.
Open tool →Temperature Converter
Convert between Celsius and Fahrenheit instantly. A small but handy reference for aquarium temperature management.
Open tool →Built with
measurable care.
Each tool is designed to answer one question clearly, without noise or upsell. Free to use, no account needed.
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