Acerca de Kalcify

Kalcify is operated by an independent sole proprietor based in Lviv, Ukraine. Editorial direction, calculator logic and user-facing copy are all maintained directly by the operator — there is no outsourced editorial team and no anonymous author pool standing behind the brand.

For questions, corrections, partnership requests or legal correspondence, write to [email protected] — see the Contact page for the postal address process and the response-time commitment.

The web is full of calculator sites that gate basic utilities behind sign-ups, bury the answer under intrusive ads, or quietly produce wrong results because nobody maintains the rates. Kalcify is the alternative: every tool is designed to give an accurate answer in seconds, without friction or noise.

That covers estimating income tax across major jurisdictions, checking BMI or daily calorie needs, generating a secure password, formatting JSON, and dozens more everyday tasks. The goal is for the answer page to be the only thing on the screen that matters.

Kalcify currently offers over 70 free tools across multiple categories, available in 5 languages (English, German, French, Spanish, and Polish). Our tools span:

Client-side computation. All calculations run entirely in your browser. Your data is never sent to our servers or stored anywhere. When you use our tax calculator, your income figures stay on your device. When you generate a password, it is created locally using the Web Crypto API and never transmitted.

Verified data sources. Our financial tools use official tax brackets and rates from government sources including the IRS (United States), HMRC (United Kingdom), CRA (Canada), and ATO (Australia). Health tools follow World Health Organization (WHO) classifications and established medical formulas. We cite our sources on every tool page.

Regular updates. Tax rates, brackets, and regulations change. We update our calculators when new rates are published to ensure you always get current results. Each tool page indicates the data year and source it is based on.

We take privacy seriously. Kalcify uses Google Analytics with Consent Mode v2, which means analytics tracking is disabled by default until you provide consent. We do not use cookies for advertising or tracking purposes.

Our tools process all data client-side, meaning your personal information (health data, financial figures, passwords) never leaves your browser. We have no database of user inputs and no way to access your calculations.

For full details, see our Privacy Policy and Terms of Service.