A little math. A lot of memories.
Anniversary & days together calculator
Every day is part of your story. Find out how many days you’ve been together and which milestone is coming next.
Every day counts.
Start with a date. We’ll find the days, anniversaries, and little reasons to celebrate.
Your story so far
Days together
Your next anniversary
More reasons to celebrate
We count full calendar days between dates. Your start date is day 0; the following date is day 1.
Keep the feeling close
Make your next milestone a daily reminder.
Add your date in Countdowns for Home Screen widgets and anniversary reminders on your Apple devices.
Explore anniversary countdowns
Dates, made simple
How to calculate your anniversary
Enter your relationship’s start date or wedding date, then choose today or a future date. The calculator finds your days together, next yearly anniversary, and upcoming milestones. Weekends and leap days are included.
January 1, 2025 to January 1, 2026 is 365 days. Your 1,000-day milestone is September 28, 2027.
One date. Plenty to celebrate.
- Dating anniversariesCount the days since your first date or the day you made it official.
- Wedding anniversariesFind how long you’ve been married and your next anniversary.
- Personal milestonesMark a friendship, a new chapter, or another meaningful beginning.
A few good questions
About your results
How many days have we been together?
Enter your start date and use today as the calculation date. The result shows the calendar days between those dates, plus the duration in weeks and days.
Does the calculator include the first day?
The start date is day 0 and the next date is day 1. If you count your start date as day 1, add one to the total. All milestones use elapsed days.
What if our anniversary is February 29?
Choose February 28 or March 1 for non-leap years. In leap years, the anniversary stays on February 29. Your total always counts actual calendar days.
When is our 1,000-day anniversary?
It is your start date plus 1,000 calendar days. The next three milestones are shown; passed milestones are replaced by upcoming ones.
Can I use this for a wedding anniversary?
Yes. Use your wedding date, first date, friendship anniversary, or work anniversary as the start date.
Do I need the app?
No. The calculator works here without an account. Dates are calculated in your browser and are not sent to a server. Add your date separately in the app for widgets and reminders.