handyman
Hazuu Tools

Anniversary Calculator

Calculate the exact elapsed time since your anniversary with real-time updates in years, months, days, hours, minutes, and seconds.

favoriteAnniversary Calculator
event

Enter Anniversary Details

Anniversary Type
Wedding Date *
info

About Anniversary Calculator

The Anniversary Calculator computes the exact elapsed time since your wedding, relationship, or any other significant anniversary date. It displays real-time updates showing years, months, days, hours, minutes, and seconds with decimal precision that ticks live in your browser.

Choose from multiple anniversary types, enter your date, and watch the numbers count up in real time. All calculations run entirely on your device with no data sent to any server, ensuring complete privacy for your personal dates.

help

How to Use

01

Select Anniversary Type

Choose your anniversary type from the dropdown: Wedding, Relationship, or Other.

02

Pick the Date

Use the date picker to select the anniversary date you want to measure from.

03

See Real-Time Results

Click Calculate to see the elapsed time update live every moment in years, months, days, hours, minutes, and seconds.

quiz

Frequently Asked Questions

What is an Anniversary Calculator? expand_more
An Anniversary Calculator measures the exact time that has passed since a specific date such as a wedding or the start of a relationship. It displays the elapsed duration in multiple units including years, months, days, hours, minutes, and seconds.
How does the real-time update work? expand_more
After you click Calculate, the tool starts a high-frequency timer that recalculates the elapsed time multiple times per second. This produces smoothly updating decimal values so you can watch the numbers tick upward in real time.
What anniversary types are supported? expand_more
The calculator supports three types: Wedding for marriage anniversaries, Relationship for the start of a romantic relationship, and Other for any custom event date you want to track.
How accurate are the calculations? expand_more
The calculations use millisecond-precision timestamps from your device clock. Years are approximated using 365.25 days per year, and months use 30.4375 days per month (the average month length). These are standard astronomical approximations.
Is my anniversary date private? expand_more
Yes. All processing happens locally in your browser using JavaScript. No dates or personal information are transmitted to any server. The tool works fully offline once loaded.