Cookies Policy
Last updated: March 19, 2026
At Factor Calculator, we believe in radical transparency and user privacy. All factor calculations, prime factorizations, and mathematical formulas run client-side in your web browser. This Cookies Policy explains how and why we use cookies and browser storage technologies.
1. What Are Cookies & Local Storage?
Cookies are small text files stored on your device by your web browser when visiting a website. HTML5 Local Storage is a modern browser technology that stores key-value pairs locally on your device with higher capacity and zero transmission with each server request.
2. How Factor Calculator Uses Browser Storage
We only use strictly necessary and functional storage mechanisms to maintain your settings and deliver a fast experience:
- Cookie Consent Preference (fc_cookie_consent): Remembers whether you have accepted our cookie notice so the banner is not displayed repeatedly.
- Language Preference: Remembers your selected language so the calculator presents content in your preferred tongue.
- Local Calculator State: Preserves temporary numerical inputs during your active browsing session.
| Storage Key | Technology | Category | Purpose | Lifespan |
|---|---|---|---|---|
| fc_cookie_consent | Local Storage | Necessary | Records cookie consent acceptance | 1 year / persistent |
| factor_calc_locale | Local Storage | Functional | Remembers selected interface language | 1 year / persistent |
| session_calc_state | Browser Memory | Session | Holds active calculation numbers during visit | Session duration |
3. Zero Third-Party Advertising & Tracking
We do not sell personal data, use cross-site tracking pixels, or engage in third-party behavioral advertising. Your mathematical inquiries and calculations remain entirely private to your device.
4. Managing and Clearing Your Preferences
You can manage, restrict, or delete cookies and local storage data at any time through your browser's security and privacy settings. You can also click the button below to reset your cookie consent status on this website:
Interactive Preference Reset
Clear stored cookie consent to re-trigger the consent popup on the homepage.
5. Contact & Privacy Inquiries
If you have questions regarding this Cookies Policy or our privacy practices, please contact our team at privacy@factor-calculators.com.