OnlineFristenrechner

OnlineFristenrechner is a web-based tool designed to calculate legally relevant deadlines by determining the end date of a time period according to specified rules. It supports professionals in fields such as law, administration, and business by reducing manual counting errors when filing documents, appealing decisions, or complying with statutory periods.

Typical inputs include the start date or triggering event, the duration (in days, weeks, months, or years), and the applicable calculation rules. Many calculators allow users to choose the jurisdiction, select whether weekends and holidays are counted or excluded, and set whether the deadline ends at the end of the day. The output usually provides the final date, a breakdown of the steps, and sometimes a note on applicable holidays.

Common use cases include determining filing deadlines in civil procedure, response times in administrative procedures, or compliance deadlines in tax and corporate law. Some tools cover multiple countries or regions and include official holiday calendars, while others focus on a single jurisdiction.

Reliability depends on up-to-date holiday calendars and legal rules. Users should verify results against official regulations or documents, especially in critical filings. These tools are typically available as free web services, sometimes with premium features integrated into legal software suites.

They are often integrated into case management systems and document templates.