Anniversary Calculator
How long has it been?
Enter the date it all began — a wedding, an anniversary, a first day at work — and see exactly how long it's been.
5
years
Calculate how long since a milestone
Use an anniversary date to see how much time has passed since a wedding, relationship milestone, work start date, sobriety date, or another meaningful event. The result turns a calendar date into an easy-to-read elapsed-time milestone.
For a future celebration, the Countdown Calculator can show how many days remain until the next event.
Related tools: Count down to a future date · Compare any two dates
Frequently asked questions
Can I use this for work anniversaries too?
Yes — it works for any recurring milestone: weddings, first dates, work anniversaries, or sobriety dates.