Privacy Policy
Last Updated: September 2026. Your privacy is fundamental to our architecture. All calculations run strictly in your browser.
1. Client-Side Execution (Zero Data Transmission)
Unlike cloud-based tools that send your shift times, payroll numbers, or hourly wages across the internet to remote servers, TimeDurationCalculator.tools performs 100% of mathematical computations locally inside your web browser’s JavaScript engine.
When you enter clock-in times, lunch break durations, hourly pay rates, or time intervals:
- Your inputs are never transmitted to our servers.
- Your inputs are never saved to a remote database.
- Your inputs are never shared with, sold to, or monetized by third parties.
2. Cookies & Local Storage
We do not use tracking cookies, behavioral advertising cookies, or cross-site fingerprinting technologies.
We utilize minimal browser localStorage solely for user-initiated interface preferences:
- Theme Preference: Storing your choice between Light Mode and Dark Mode so the site respects your display preference upon revisit.
3. Server Access Logs
When you request a webpage, our hosting web servers (e.g., Cloudflare CDN) automatically receive standard HTTP connection metadata (such as your IP address, browser user-agent, and requested file path). This data is strictly used for network routing, DDoS defense, and infrastructure reliability.
4. GDPR & CCPA Compliance
Because we do not collect, process, or sell personal identifying information (PII) or user calculation inputs, our platform inherently satisfies the core data minimization tenets of the European Union General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA).
5. Contact Concerning Privacy
If you have questions regarding this Privacy Policy, please contact our privacy compliance officer at privacy@timedurationcalculator.tools.