Calculator · Age & timing
Anniversary Calculator
Enter the day it started (you know the one) to count your time together and see your next anniversary and big milestones.
- Days, weeks, months and years together
- Your next anniversary
- The next big-number milestone
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How to calculate how long you've been together
Count the days between your start date and today. We handle leap years and month lengths, so the number is exact. Your anniversary is the same calendar date each year; if you started on February 29, most couples celebrate on February 28 or March 1.
Relationship milestones worth celebrating
- 100 days, popular in Korea and on social media
- 1,000 days, roughly 2 years and 9 months
- Your first, fifth and tenth anniversaries
Traditional anniversary gifts
| Year | Traditional | Modern |
|---|---|---|
| 1 | Paper | Clocks |
| 5 | Wood | Silverware |
| 10 | Tin | Diamond jewelry |
| 25 | Silver | Silver |
| 50 | Gold | Gold |
How long is the average relationship?
It depends hugely on age and on whether you count marriages. See average relationship length, or wonder about the next step with When Will I Get Married? and how long to date before marriage.
Frequently asked questions
How many days is 1 year together?
365 days, or 366 if it includes February 29.
When is our 1,000-day anniversary?
Enter your start date and the calculator shows your next milestone, including day 1,000.
Is a "monthiversary" a thing?
For many couples in the first year, yes.
Dating data, weekly
New calculators and one surprising stat every week. No spam, no matchmaking.