About AquaCalc

AquaCalc is a small, independent site that builds accurate, transparent aquarium calculators. No sign-ups, no paywalls, no dark patterns — just tools that show their work.

Why the formulas are on the page

Every calculator states the formula it uses and the constants behind it (a US gallon is exactly 3.785411784 litres; a UK gallon is exactly 4.54609 litres). If a figure ever looks wrong, you can verify it by hand in seconds. Trust is earned by showing the math, not by hiding it.

Our principles

• Accuracy first. Conversion factors come from official definitions, and results are checked with automated tests.
• Fast on any device. The site is statically rendered, ships minimal JavaScript and never blocks on ads.
• Useful without ads. Ads never cover the calculator, never look like interface controls and never shift the layout. The tools work with ad blockers on.
• Honest content. Guides only exist when we have something real to say — no keyword-stuffed filler pages.

Colophon

Built with Nuxt, TypeScript and Tailwind CSS. Type set in your system's interface font. Illustrations are inline SVG.