Privacy Policy

At OnlineCalculator.pro, your privacy is our absolute, non-negotiable priority. We have engineered our technical architecture to guarantee that no user data is collected, stored, or transmitted to any external database or servers during your use of our services.

1. Zero Server-Side Computing Guarantee

Unlike traditional utility sites, all mathematical equations, amortization schedules, and metabolic formulas configured on OnlineCalculator.pro execute strictly inside your local web browser’s sandbox using client-side JavaScript.

Your input data (such as monthly incomes, loan amounts, weight measurements, or dates of birth) is never sent to our servers. Because of this, it is technically impossible for OnlineCalculator.pro or any third parties to access, log, or compile profiles on your calculated datasets.

2. Local Browser Storage

To enhance your user experience, OnlineCalculator.pro offers optional feature states like "Favorites" and "Recently Used Calculations." These states are managed strictly using your browser's local cache (such as localStorage).

• Your browser controls the local cache directly.
• No data from your local cache is transmitted or shared with external analytics systems.
• You can clear this saved calculation history at any time by clearing your browser site cache or cookies.

3. Web Analytics & Cookies

We use minimal, privacy-focused analytics software to understand page layout traffic and Core Web Vitals performance. This tracking uses completely anonymous, aggregated identifiers and does not cross-reference personal names, IPs, or form input variables.

4. Changes to This Policy

We may update our Privacy Policy periodically to reflect new browser security parameters. However, our core philosophy remains unchanged: **No data transmission, absolute client-side privacy.**