Privacy Policy
At Percentage Calculator, your privacy is our top priority. We believe in complete transparency and zero unnecessary data collection.
1. Client-Side Calculations
All calculations performed on our website take place entirely within your web browser (client-side execution using JavaScript). None of the numbers, formulas, exam scores, or financial values you enter are ever transmitted to or stored on our servers.
2. Data Collection & Analytics
We do not collect personal identification information such as your name, email address, phone number, or physical address unless you voluntarily submit it to us via our Contact form.
3. Local Storage
Our application uses browser localStorage solely to save your local calculation history and color theme preference (light/dark mode). This data stays 100% on your personal device and can be cleared at any time by clicking "Clear all" in the calculation history section or clearing your browser cache.
4. Cookies & Third-Party Services
We do not use tracking cookies or sell your personal data to third parties. We may use privacy-friendly standard web hosting server logs to monitor uptime and prevent denial-of-service attacks.
5. Contact Information
If you have any questions or concerns regarding this Privacy Policy, please reach out to us via our Contact Us page.