Anniversary Calculator

Enter the date you were married, or any start date that matters to you, and the Anniversary Calculator shows how long you have been together in completed years, months and days, with the total days, total weeks and total months underneath.

It also shows the date of your next anniversary and which number it is. The calculator counts from the start date to today, or to a date you choose, and it follows the Gregorian calendar, leap days included.

Three things the calculator does not do are worth stating up front, because the old guide described them as if they were there.

The calculator carries no gift list: it shows no traditional gift and no modern gift for any year, so the full gift table below is the guide’s own table, built from the standard lists, not a tool feature.

It shows no live countdown and no “days until” figure in the result, only the next anniversary date. And it has no share button, so there is nothing to copy or send from the tool itself; the numbers are on the page for you to use as you like.

How It Works: Worked Example

Type the start date as month, day and year, or open the date picker with the “Show date picker” link. A second date group, labelled “as of”, is optional: fill it in to count to a date other than today, and leave it blank to count to today.

Under the form sit four quick chips. The first fills in 14 May 1990, the second 1 January 2000, the third 29 February 2000, and the fourth 25 December 2010.

Each one calculates at once. Leave the start date blank and the calculator answers: “Please enter the anniversary date.” A date the calendar never had, 31 February for example, is turned away with: “That date is not valid.

Please check the anniversary date.” A start date after the as-of date is answered with: “The “as of” date is before the anniversary date. Please check the dates.”

The result is a big line of completed years, months and days, a line reading “From Monday, 14 May 1990 to Friday, 7 November 2026.”, a line reading “Your 37th anniversary is on Friday, 14 May 2027.”, and three totals: total months, total weeks and total days.

The count steps forward in whole years, then whole months, then counts the remaining days, the same method as the Age Calculator. A month-end date clamps when the target month is shorter: 31 January plus one month is 28 February, or 29 February in a leap year.

A couple together since 29 February counts the anniversary on 28 February in years that are not leap years. The tool does not offer 1 March as a choice.

Two worked examples, both checked by hand. Married on 15 June 2000 and measured in November 2026, that is 26 years of marriage. Your 25th anniversary was 15 June 2025, Silver on both lists.

Your next milestone is the 30th on 15 June 2030, Pearl on the traditional list and Diamond on the modern list. Married on 15 June 2015 and measured on 4 November 2026, that is 11 years, 4 months and 20 days, or 4,160 days in total. The next anniversary is 15 June 2027, the 12th.

Anniversary Gifts by Year

The gift lists below are the standard American lists, traditional and modern, for every named year from the 1st to the 60th. The traditional list has Victorian roots and gives most years a symbolic material, starting humble with paper and cotton and growing more precious as the years stack up.

The modern list was drawn up in twentieth-century America and tends to be more practical, which is why it offers clocks for year one and appliances for year four. From the 25th anniversary onwards the two lists largely agree, with silver, ruby, gold and diamond marking the same milestones on both.

The history is worth a sentence, because the lists are often quoted as if they were ancient. Emily Post’s 1922 book Etiquette listed only eight anniversary themes: paper at 1 year, wood at 5, tin at 10, crystal at 15, china at 20, silver at 25, gold at 50 and diamond at 75.

The modern list was formalized by the American National Retail Jewelers Association in 1937 and updated in the 1980s. The biggest change between the 1922 list and today’s list is the diamond anniversary, which moved from the 75th year to the 60th.

Two notes on the table. First, the 20th year is China on the traditional list and Platinum on the modern list. Emerald is the 20th year’s gemstone, and that is where an earlier version of this page picked up Emerald as the traditional gift.

The gemstone lists run alongside the gift lists, and the two are easy to mix.

Second, the lists vary by country: the 4th is linen or silk in UK lists, and the 12th is “silk and fine linen” in UK lists, where the American list gives silk. Beyond the 60th, the 70th is Platinum on both lists and the 75th is Diamond and gold.

Milestone Anniversary Countdown

For a couple married on 14 May 1990, here are the next five milestone anniversaries with exact dates, weekdays, traditional gifts and days remaining from 7 November 2026.

The old version of this table listed a 10th anniversary that had already passed and gave the 25th and 30th day counts one day short; the table below lists only milestones still ahead and counts every day by hand.

Day-Count Milestones: 100 Days and More

Below the result, the calculator also lists the dates you reach 100, 200, 300, 500 and 1,000 days together, then 2,000, 5,000 and 10,000 days.

Counting days rather than years is a popular custom in South Korea, where couples often celebrate their 100th, 200th and 1,000th day, and it has spread through Korean dramas and social media. The start date counts as day 0, so the 100th day is 100 days after the date you began.

Some couples count the first day as day 1 instead, which moves each milestone one day earlier; if that is your custom, subtract a day from the dates shown.

Anniversary Details Worth Knowing

Anniversary number vs anniversary year

Married in 2015, in 2026 you celebrate the 11th anniversary but you are in the 12th year of marriage. The number counts completed years; the year counts the one you are living. This is the most common anniversary confusion.

Traditional vs modern gift lists

The Victorian traditional list gives paper for the 1st, silver for the 25th, gold for the 50th, diamond for the 60th.

The 20th-century American modern list differs: clocks for the 1st, diamond jewelry for the 10th, platinum for the 20th. Emily Post’s 1922 book listed only 8 themes; diamond moved from the 75th to the 60th over time.

Not just weddings

The same math covers company foundings, relationship start dates, and any recurring annual milestone. The tool is not wedding-only: enter any start date and it counts the years, months and days since, with the next annual date and its number.

How This Calculator Compares

Three anniversary calculators rank for the same query, and each one counts something this page does not. The table below puts them next to each other so you can judge each one on its own terms.

What the calculator leaves to the guide: the gift list, the days-until count and the day-count dates all live in the guide rather than in the tool, and the tool has no share button.

Multicalculators counts days until the next anniversary in the tool itself and lets you pick a milestone and a count-up-to date; SimpleMoney shows the gift theme for the next milestone; Calculate.co.nz gives the total days since the start date. None of the three gives the full 1-to-60 gift table, and none gives the day-count milestones.

Keep Exploring

Birthday Calculator: count down to your next birthday in days, and see the weekday of your next ten birthdays, including any Friday the 13th.

Half Birthday Calculator: find the date exactly six months after any birthday, with the weekday, and the school-session table for summer birthdays.

Golden Birthday Calculator: find the date you turn the age equal to your birth day, with the double, triple and platinum birthdays worked out by hand.

Days Lived Calculator: count your days lived from any birth date, with the day-count milestones and a live hours, minutes and seconds panel.

Sources

U.S. Naval Observatory: Leap Years FAQ (how the Gregorian calendar decides which February gains a 29th day)

U.S. Naval Observatory: Julian Date Converter (a running day count for any pair of calendar dates)

Wikipedia: Wedding anniversary (the full traditional and modern gift lists, year by year)

Frequently Asked Questions