Calculators

Calculate Your Wedding Anniversary Year

Easily find out which anniversary year you're celebrating based on your wedding date.

Wedding Anniversary Calculator

Table of contents

◦Calculate Your Wedding Anniversary Year
◦Formula
◦How to use
◦FAQ

Calculate Your Wedding Anniversary Year

This calculator helps you determine which wedding anniversary you are celebrating based on your wedding date and the current date. It is particularly useful for couples who want to keep track of their milestones and plan celebrations accordingly. By inputting the date of your wedding and today's date, you can quickly find out how many years you have been married.

The formula takes into account the year of your wedding and compares it to the current year, adjusting for whether your anniversary has already occurred this year. This ensures that you get an accurate count of your anniversary year, reflecting the true duration of your marriage.

Formula

The formula calculates the anniversary year by comparing the wedding date and the current date. It extracts the year from both dates and adjusts the count based on whether the wedding date has passed in the current year.

How to use

  1. Enter your wedding date in the format YYYYMMDD.
  2. Input the current date in the same format YYYYMMDD.
  3. Click calculate to find out your anniversary year.

FAQ

What format should the dates be in?

You should enter the dates in the YYYYMMDD format, for example, 20220514 for May 14, 2022.

What if my wedding date is in the future?

The calculator will return a negative anniversary year if the current date is before your wedding date.

Can I use this calculator for any wedding date?

Yes, you can use this calculator for any wedding date as long as you input the correct format.

FORMULA RULES (strict — the formula compiles to a single JS function the page runs):

  • Identifiers on either side MUST exactly match the camelCase names you declared in inputs/outputs.
  • Every output[].name MUST appear on the LEFT side of a "name = expression" line.
  • Use ^ for powers (e.g. (1+r)^n) OR pow(x, y).
  • Allowed math functions: sqrt abs sin cos tan log ln exp pi pow min max round floor ceil sign random.
  • No comments, no "where ..." clauses, no if/else/ternary, no string outputs, no Σ, no subscripts, no arrays, no recursion.
  • Single-step computation only. If conditional logic is needed, use boolean arithmetic: (cond > 0) exprA + (cond <= 0) exprB.
  • The bug context lists what the legacy version got wrong. FIX IT.
  • 2-5 inputs typical; outputs are plain numbers.