Years of service calculator
This years of service calculator works from your start date and a reference date: in years, months and days, with working days and the next service anniversaries. Leave the date empty to use today.
Source: §§ 187, 188 BGB (German Civil Code) – calculation of periods and dates (counting method for years, months, days). Updated: .
How it is calculated
Length of service is the time between starting at a company and a reference date. It is given in full years, months and remaining days: someone who started on 1 March 2010 has been there exactly 16 years, 6 months and 26 days on 27 September 2026.
How it is counted
A year is complete on the anniversary of the start date, a month on the same day of the following month. If that day does not exist, such as the 31st in a short month or 29 February, the 1st of the next month applies. This follows the same counting as the age calculator on this site. As extras the table shows total months, weeks and days as well as the working days from Monday to Friday, without public holidays or leave.
Service anniversaries
Anniversaries after 10, 25, 40 and 50 years are common, and many employers also celebrate 5, 15 or 20 years. The list gives the date of every step and the distance from the reference date.
- Without a reference date the calculator counts up to today.
- An earlier reference date suits references, applications or pension paperwork.
- This is a pure date calculation and not legal advice.
Frequently asked questions
How do I calculate my length of service?
Enter the start date and a reference date, for example 2010-03-01 and today. The calculator gives the duration in years, months and days.
Does the start day count?
Years and months follow the anniversary; the start day itself is counted in the table’s total number of days.
When is the 10-year service anniversary?
On the tenth anniversary of the start date. If you began on 1 March 2010 it falls on 1 March 2020; the anniversary list shows all steps.
Sources and legal basis
- §§ 187, 188 BGB (German Civil Code) – calculation of periods and dates (counting method for years, months, days)
- ISO 8601 – Date and time format (proleptischer gregorianischer Kalender)
- Wikipedia – Dienstjubiläum (usual anniversary milestones of 10, 25, 40 and 50 years)
As of: · Editorial policy
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