Prywatność
Last Updated: 2026
Commitment to privacy, client-side processing of calculations, secure browsing, and full transparency.
1 About the Service
CalculPourcentage (https://www.calculpourcentage.org) provides free online percentage and financial calculation tools (percentages of numbers, variations, discounts, VAT/sales tax, margins, and profit ratios).
We prioritize user privacy and strictly limit data collection to the minimum required for technical operation.
2 100% Client-Side Processing (Zero Data Storage)
All math computations entered into our online calculators run directly inside your web browser via client-side JavaScript.
- No numbers, percentages, prices, or amounts are transmitted to our servers.
- No calculation history or session math is stored in any database.
- Your numeric inputs remain strictly on your local device.
3 Contact Form Communications
When you use our contact form or send us an email, we collect only:
- Your name or alias;
- Your email address;
- The contents of your inquiry or feedback.
This information is used strictly to reply to your inquiry. We never sell, rent, or trade your contact information.
4 Cookies, Local Storage & Advertising (Google AdSense)
Our platform uses technical browser storage and may display advertisements through certified partners:
Essential Technical Storage: We use localStorage to remember your selected language and cookie consent status. Please review our Cookie Policy for details.
Third-Party Vendors & Google AdSense: Third-party vendors, including Google, use cookies to serve ads based on prior visits to this and other websites on the internet.
You may opt out of personalized advertising by visiting Google Ads Settings or aboutads.info.
5 Server Logs & Security
Standard web server logs (anonymized IP addresses, browser user agent, date/time stamps) are maintained solely for security monitoring, DDoS mitigation, and operational diagnostics.
All communications are secured with modern TLS/HTTPS encryption protocols.
6 User Rights (GDPR / CCPA)
Under international privacy frameworks including GDPR and CCPA, you retain full rights to request access, correction, or deletion of any personal communications sent to us.
7 Contact Information
For any privacy inquiries or requests, please contact us directly: