Anniversary Calculator
Find out how long you have been together, when your next anniversary is, and the traditional gift for it. Use it as a wedding anniversary calculator, or for dating and work anniversaries.
Your time together appears here.
Enter the start date and choose Calculate.
How your time together is counted
We count on the real calendar from your start date to today: full years first, then full months, then days. The next anniversary is the next time your start date comes around. Under the result you also get your next few milestones, the date of any anniversary you choose, and a file to add the date to your calendar every year.
Planning a celebration? Start a countdown to the date, or compare your ages with the Age Difference Calculator. To keep the family's birthdays in one place too, use the Birthday Calendar.
Worked example
Married June 14, 2015, checked on October 2, 2026. From June 14, 2015 to June 14, 2026 is 11 years; to September 14 is 3 more months; to October 2 is 18 days. The next anniversary is the 12th, on June 14, 2027, and its traditional gift is silk.
What anniversary is it this year?
Subtract the year you started from this year. Married in 2015, 2026 is your 11th anniversary year. The number only changes on the day itself: until your date comes around, you are still counting toward it. That is why the calculator says how many full years you have been together and, separately, which anniversary comes next.
For a quick check of any year ahead, type a number into Find any anniversary under the result. For example, a couple married on June 14, 2015 reaches their 25th, the silver anniversary, on June 14, 2040.
How to count anniversary months
A month is complete when the calendar reaches the same day number as your start date. Started on the 14th, every 14th is another month. Some couples call these monthiversaries and mark the first few, or every one in the first year.
Dates late in a month need one rule. When a month has no matching day, it is complete on its last day. Here is how that works for a start date of January 31, 2025:
| Month | Date |
|---|---|
| 1 | Friday, February 28, 2025 |
| 2 | Monday, March 31, 2025 |
| 3 | Wednesday, April 30, 2025 |
| 6 | Thursday, July 31, 2025 |
| 12 (1st anniversary) | Saturday, January 31, 2026 |
100 days, 1,000 days and other day milestones
Counting days gives you milestones between the yearly dates. In South Korea, the Korea Herald explains, it is customary for couples to count down to their 100th day together and to celebrate every 100 days. Anyone can borrow the idea: 100 days, 500 days and 1,000 days all make good excuses for a small celebration.
We count the start date as day 0, so day 100 is exactly 100 days later. For a couple married on Sunday, June 14, 2015:
| Day | Date |
|---|---|
| 100 | Tuesday, September 22, 2015 |
| 500 | Wednesday, October 26, 2016 |
| 1,000 | Saturday, March 10, 2018 |
| 2,000 | Friday, December 4, 2020 |
| 3,000 | Thursday, August 31, 2023 |
| 5,000 | Tuesday, February 20, 2029 |
| 10,000 | Thursday, October 30, 2042 |
The same count works for one person: How Many Days Old Am I finds your own 10,000th day. What Day Was I Born tells you the weekday of any date, your wedding day included.
Wedding, dating and work anniversaries
- Wedding. Use your wedding day. The result adds the traditional gift for your next anniversary year.
- Dating. Use the date that matters to you both, such as your first date or the day you made it official. There is no right answer, so pick one and stay with it.
- Work. Use your first day on the job. If your workplace marks years of service, the calculator gives you the exact date of each one.
- Other. Moving into a home, getting a pet, quitting a habit: any date you want to count from works the same way.
Traditional gifts for milestone anniversaries
| Anniversary | Traditional gift |
|---|---|
| 1st | Paper |
| 5th | Wood |
| 10th | Tin and aluminum |
| 15th | Crystal |
| 20th | China |
| 25th | Silver |
| 30th | Pearl |
| 40th | Ruby |
| 50th | Gold |
| 60th | Diamond |
The traditional US list covers years 1 to 15, then every fifth year to the 60th, and the 75th. See every year in anniversary gifts by year.
Anniversaries on February 29
A leap day start date only comes around every four years. In the other years, the calculator puts your anniversary on February 28, the last day of February, and the calendar file does the same. In leap years it falls on February 29 itself. Some couples prefer March 1; if that is you, enter March 1 as your start date.
Anniversary Calculator questions
How long have we been together?
Enter the date you met, started dating or got married. The calculator counts the full years, months and days since then, plus totals in months, weeks and days.
How many days have we been together?
The calculator shows the total under Time together. It counts every day from your start date to today, so the day you started is day 0 and the next day is day 1.
What year anniversary is it?
Subtract your start year from this year. If the date has not come yet this year, the anniversary is still ahead; the calculator shows the next one and how many days are left.
When is our 100-day anniversary?
Your 100th day together is 100 days after your start date. The calculator lists your next milestones, including 100 days, 500 days and every 1,000 days.
When is our 1,000th day together?
It is 1,000 days after your start date, a little under 2 years and 9 months. Enter your date and the calculator shows it if it is still ahead.
What is a monthiversary?
A monthly anniversary: the same day of the month as your start date, counted month by month. Some couples mark the first few, and the calculator shows your next one.
How do you count anniversary months?
Count full calendar months from your start date. If you started on the 31st and a month is shorter, that month is complete on its last day.
What date should we count from if we are not married?
Whatever date means the most to you both: your first date, the day you made it official or the day you moved in together. Pick one and keep it.
What if our anniversary is on February 29?
In years without February 29, the calculator puts your anniversary on February 28, the last day of February. In leap years it is on February 29.
Can I use this for a work anniversary?
Yes. Choose Work as the type and enter your first day on the job. You get your years of service, the date of your next work anniversary and your day milestones.
What is the traditional gift for each anniversary?
The traditional US list starts with paper for the 1st anniversary, then cotton, leather and so on, with silver for the 25th and gold for the 50th. The milestone years are above.
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Published October 4, 2026. Last updated October 4, 2026. Uses the Gregorian calendar and your device's time zone.