Date Calculator
Calculate days between dates, German legal deadlines with holidays, age, and calendar week. All 16 states covered. Free, no signup.
Date Calculation and Deadline Computation Under German Law
The Date Calculator computes time spans between two dates and determines deadline expiry according to the legal rules in §§ 187–193 BGB (German Civil Code). Whether you need to add or subtract days, weeks, or months, determine a legal deadline, or count business days — this tool delivers the result instantly.
Deadline Calculation Under §§ 187–193 BGB
German deadline law distinguishes between an event-triggered deadline (Ereignisfrist, § 187 para. 1 BGB) and a start-date deadline (Beginnfrist, § 187 para. 2 BGB). For event-triggered deadlines — the more common case — the period begins on the day after the event. The deadline expires at the end of the last day of the period (§ 188 BGB). If the deadline falls on a Saturday, Sunday, or public holiday, it is extended to the next business day (§ 193 BGB).
Werktage vs. Arbeitstage (Business Days)
German law makes an important distinction: Werktage are Monday through Saturday (6 days per week, § 3 BUrlG), while Arbeitstage are typically Monday through Friday (5 days). Many deadlines in labor and tenancy law refer to Werktage including Saturday. The Date Calculator supports both calculation methods.
Public Holidays by Federal State
Germany has 9 nationwide public holidays and up to 4 additional state-level holidays depending on the Bundesland. Bavaria and Baden-Württemberg have the most holidays (12–13), Berlin and Bremen the fewest (10). For correct deadline calculation under § 193 BGB, the federal state must be known — our calculator covers all 16 states.
When Do You Need a Date Calculator?
- Calculate notice periods (rental, employment, subscription)
- Check withdrawal periods (14 days under distance selling law)
- Appeal deadlines against official notices (e.g. 1 month after delivery)
- Determine statute of limitations (3 years under § 195 BGB)
- Calculate maternity protection periods (6 weeks before / 8 weeks after birth)
- Plan delivery dates and project durations in business days
Date Arithmetic
Add or subtract any number of days, weeks, months, or years to a date. The result shows the weekday, calendar week, and whether the day is a public holiday. Ideal for project planning, scheduling, and any case where you need to know "in 90 days" or "6 months ago."