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Finance, health, math, and everyday calculators β all peer-reviewed, all free, no sign-up required.
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Why Calculy?
Built to be the calculator site you actually want to use.
Instant results
Results update in real time as you type or drag. No loading screens, no delays, no page refreshes.
Visual by default
Every calculator includes charts, breakdowns, and visual aids β not just a raw number.
Mobile first
Designed for touch from the start. Sliders, big tap targets, and layouts that work on any screen size.
Private
All calculations run in your browser. No data sent to our servers without your consent.
Accurate formulas
Every formula is sourced from official financial, health, and scientific standards. Peer-reviewed.
Save & share
Save your calculations, share links with pre-filled values, and export to PDF. Free.
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Every tool we offer β free, instant, no sign-up.
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Free guides explaining the formulas, concepts, and real-world applications.
Why Calculy exists
Most calculator websites were built in the early 2000s and haven't changed since. They give you a number β no context, no explanation, no chart showing what that number actually means over time.
Calculy was built to answer the question that comes after the number: what does this mean, and what should I do about it? Every calculator includes worked examples, visual breakdowns, and contextual explanations written in plain language β not financial jargon.
The Australian-specific tools β mortgage calculator, stamp duty, borrowing power, and HomeVerdict β use the same assessment criteria Australian banks apply, not simplified approximations. The formulas are documented, the sources are cited, and the methodology is transparent.
Calculy is free, requires no sign-up, and runs entirely in your browser. Your financial information stays on your device.
How our calculators work
Methodology and sources
Calculy's calculators are built on publicly available, authoritative data sources. We do not invent formulas or use proprietary estimates.
All calculators provide educational estimates only and do not constitute financial, health, or legal advice. Results should be verified with qualified professionals before making financial decisions.Full disclaimer β