About Us & Our Mission
Making complex time, date, and payroll mathematics accessible to everyone—with a 100% commitment to data privacy.
Why Zeit-Rechner.com was Built
Whether you're a freelancer logging billable hours, an HR manager calculating Fair Labor Standards Act (FLSA) compliance, or a student counting down days to a deadline—we all deal with time math. Usually, this means making frustrating calculating errors in our heads or dealing with clunky Excel spreadsheets.
The idea for Zeit-Rechner.com was born out of a simple frustration: Why are there no beautifully designed, mobile-friendly online calculators that load instantly, work offline, and actually protect the user's data?
Our Milestones
Launch of Zeit-Rechner.com with initial basic hour calculators for manual difference calculation.
Integration of shift and break calculations in accordance with local working hours acts.
Internationalization and launch of the English version to support global time tracking.
Complete design overhaul with state-of-the-art, reactive dashboards and 100% privacy-focused client-side calculation engines.
Our Commitment to Quality (E-E-A-T)
As developers focused on payroll logic and software engineering, we made it our mission to build precise, reliable calculators. Every calculation runs through a single shared, unit-tested engine and follows the rules of the German Working Time Act (ArbZG), so that net worked hours convert reliably into industrial minutes and decimal hours (e.g., 8.75 hrs) for dependable timesheets. Where a date is involved, the calculators account for leap years and Daylight Saving Time (DST) transitions.
100% Client-Side Privacy
User trust is our foundational pillar. Unlike many online utility tools, Zeit-Rechner.com processes all calculations entirely locally within your browser. There is absolutely no server-side tracking, and no user profiles are generated. When you calculate your sensitive payroll or timesheet data, your input mathematically stays entirely on your own device.
Free and Always Accessible
We believe essential productivity tools should have zero barriers to entry. That’s why our platform is entirely free of paywalls, requires no user registration, and has no usage limits. To maintain the servers and development costs, the project is funded through minimal, carefully placed contextual ads that do not disrupt your user experience.
Got Questions or Feedback?
We are constantly improving and expanding our calculators. If you are missing a feature or have discovered a bug, please don't hesitate to reach out to us at info@zeit-rechner.com.