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Anniversary Calculator
See the days and years together so far and list the anniversaries still to come.
Anniversary milestones
Time together: —
Total days: —
Next anniversary: —
How to use the Anniversary Calculator
- Choose the start date of the relationship, job or event.
- Pick how many upcoming anniversaries you want listed.
- Read the time together so far and the milestone table below it.
Features
- Exact years, months and days together
- Upcoming anniversaries with weekday and days away
- Traditional gift names for milestone years
- Runs locally, no uploads
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Frequently Asked Questions
Common questions about the free online anniversary calculator.
The tool compares calendar fields, so the result is exact whole years, months and days rather
than a rounded number of days.
Each future year is added to the start date in turn, and the first dates after today are
listed with their weekday and days remaining.
Common lists give paper for one year, wood for five, tin for ten, silver for twenty-five,
ruby for forty and gold for fifty years.
JavaScript rolls 29 February to 1 March in a non leap year, so the anniversary lands at the
start of March in those years.
Yes. Any start date works, so you can track a hire date, a first day at school, a house
purchase or a project kick-off.
No. The total counts full days already passed, and the days away column counts whole days
remaining until each anniversary.
A negative span has no meaning for an anniversary, so the tool tells you the date is in the
future instead of guessing.
No. The dates stay in your browser and every calculation runs on your own device.
Yes. The calculator is fully responsive and works in any modern browser on phone, tablet and
desktop.
Yes. It is completely free, needs no account and has no limit on how many dates you check.
Last updated: October 10, 2026