How to use the anniversary calculator
Enter the original event date and get completed years plus the next anniversary countdown.
How the calculation works
For events on 29 February, this tool uses 28 February in common years; other anniversary conventions may use 1 March.
Check your inputs carefully: an incorrect date can change a result. Dates and times are entered using your device settings, and no account is needed. For formal, legal, medical or financial purposes, verify the applicable local rules and official records.
Frequently asked questions
Can I use a wedding or work-start date?
Yes. It works for any recurring yearly event such as weddings, jobs or friendships.
Is this an official legal calculation?
No. It is a general date calculator. Laws and benefits rules can be different.
Are the dates I enter uploaded?
No. AgeGlide calculates your results in your browser. Entered dates are not sent to our server for processing.