Anniversary Calculators

Whatever you are marking, these anniversary calculators measure the time since a meaningful date and count down to the next milestone.

The Anniversary Calculator is the general-purpose tool — enter any starting date to see how long it has been and when the next anniversary falls. From there the tools specialise. The Wedding Anniversary Calculator tracks years married with a countdown to the next; the Relationship Length Calculator gives a running total of time together; and the Work Anniversary Calculator counts years of service.

There are tools for less obvious milestones too — friendship, engagement, business, and sobriety anniversaries — each phrased for the occasion it serves. All of them use the same careful date maths, so month-ends and leap years are handled correctly and the countdown to your next anniversary always lands on the right day.

Enter a date and the answer appears instantly, computed privately in your browser.

All Anniversary Calculators (16)

Anniversary Calculator Enter a date to see how long ago it was in years, months, and days, plus a live countdown to the next anniversary. Wedding Anniversary Calculator How long have you been married? Enter your wedding date for the exact years, months and days — plus a countdown to your next anniversary. How Long Have We Been Married? How long have you been married? Get the exact answer — the years, months and days since your wedding — plus a countdown to your next anniversary. Relationship Length Calculator How long have you two been together? Enter the day you started dating for your exact time as a couple — years, months and days, updated to today. Dating Anniversary Calculator When's your next dating anniversary? Enter the day you got together for the date, a countdown to it, and exactly how long you've been a couple. Work Anniversary Calculator How long have you worked there? Get your exact years of service — years, months and days — and a countdown to your next work anniversary. Days Until Our Anniversary Count down the days until your next anniversary. Enter your date to see how many days remain, the weekday it falls on, and time elapsed. Anniversary Countdown Start an anniversary countdown from any date. See the days remaining to your next anniversary, the weekday, and how long it's already been. Engagement Anniversary Calculator Track your engagement anniversary. Enter the date you got engaged for the exact time since and a countdown to your next anniversary. Friendship Anniversary Calculator How long have you been friends? Enter the day it began for your exact time as friends — plus a countdown to your friendship anniversary. Business Anniversary Calculator How long has your business been running? Enter the founding date for your exact years in business, plus a countdown to your next milestone. Monthiversary Calculator Count your monthiversaries. Enter your start date to see how many months and days you've been together, plus your next anniversary. Wedding Anniversary Countdown Count down to your wedding anniversary. Enter your wedding date to see the days remaining, the weekday, and how long you've been married. How Many Years Married? How many years have you been married? Enter your wedding date for the exact count in years, months and days, plus your next anniversary. Sobriety Anniversary Calculator Track your sobriety. Enter your sobriety date to see how long you've been sober in years, months, and days, plus your next milestone. Graduation Anniversary Calculator How long since you graduated? Enter your graduation date for the exact years, months and days — plus a countdown to the next anniversary.

Frequently asked questions

Can I count down to my next anniversary?
Yes. Most of these tools show both the time elapsed since your starting date and a countdown to the next anniversary, including the weekday it falls on.
Is there a calculator for work or dating anniversaries?
Yes. Alongside wedding anniversaries there are dedicated tools for dating, relationship length, work anniversaries, and more niche milestones like friendship and sobriety.

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