How Long Have We Been Together Calculator for Couples

How Long Have We Been Together?

Enter your start date and get a live counter, total days, calendar months, anniversaries, monthsaries and milestone dates, all on this page.

Use the date your relationship officially started, the date you started dating, or another date you personally want to count from.

Relationship start date

Start time (optional)

Your name (optional)

Partner name (optional)

Your relationship date is used in your browser to calculate your results. The tool does not require an account or send your relationship details to a server.

How Long Have We Been Together?

Most couples remember the year they got together, but the exact count is harder to pin down. This calculator turns one start date into a complete set of results: a live counter, total days, calendar months, your next anniversary, monthly anniversaries and milestone dates. If you are asking how long have we been dating, the process is identical, because the tool counts from whatever date you enter. A short dating calculator guide is also available if you want a lighter read.

How the Relationship Calculator Works

You enter a start date, and you can add a start time if you want second-level accuracy. Without a time, the tool counts from midnight at the start of that day. The result is the gap between that moment and right now. Years, months and days are counted on the calendar, not by dividing a giant number of seconds. A relationship that began on January 31 reaches one month on the last day of February, and a February 29 start date is treated as February 28 in years without a leap day.

How Many Days Have We Been Together?

The days section shows your exact total, followed by weeks, leftover days, hours, minutes and seconds. Total days is the number most people share, since it is easy to compare and easy to remember. If you want a shorter explanation of this one number, there is a short guide to counting days together, but you do not need it to get your answer here.

How Many Months Have We Been Together?

Months are counted as complete calendar months from your start date, with the remaining days shown separately. For example, 43 months and 12 days is the same length of time as 3 years and 7 months plus 12 days, and the tool shows both forms. This is handy for couples who track progress monthly. For more on that habit, see this page on counting months together.

Relationship Length Calculator

Sometimes you want the length of a relationship at a date other than today, such as a wedding day, a move, or a planned trip. Choose a custom end date and the tool returns the years, months, days, total days, weeks and hours between your start date and that date. The end date cannot be before the start. If you only need a single-purpose page, the standalone duration page covers that, though this tool already includes it.

Relationship Anniversary Calculator

The anniversary section finds the next date that matches your start date, shows how many days remain, and tells you how many years you will have reached. A live countdown runs beneath it. If today is your anniversary, the tool shows zero days remaining. Planning something special? These dating anniversary ideas may help.

Monthsary Calculator

A monthsary is simply the same day of each month. The tool shows your next one and the days remaining, and you can switch on a list of the next 12 monthsary dates. When a month is shorter than your start day, the date moves to the last day of that month. Some couples use these dates for a quick check in, and the monthly check-in questions work well for that. Reaching the half year mark is covered in what six months together can mean.

Relationship Milestones

The milestone table lists 100, 200, 365, 500, 1000, 1500, 2000 and 3000 days, plus 5 and 10 years. Reached milestones show the date they happened. Upcoming ones show the future date and the days remaining. The 365 day milestone and your 1 year anniversary can fall on different dates, because 365 days is a fixed count while a calendar year can have 366 days. The tool shows both and explains the difference for your start date. A 100 days together date is often the first one couples mark, while 500 days together and 1000 days together are popular later targets. If your number is different, the Find My Milestone Date tool calculates any number of days. Type 750 and it returns the exact date, the weekday and whether it has passed. Some couples pair milestones with a conversation, and these relationship check-in questions are a good place to start.

What Date Should I Use?

Use whichever date feels true to you. That might be your first date, the day you became official, the day you started dating, your wedding date, or another date that matters to you. The calculator always uses exactly what you enter, and you can run it again with a different date at any time.

Can I Save My Relationship Counter?

Yes. After you calculate, your start date, time and optional names are saved in your browser using local storage. The tool does not save a running seconds value. When you return, it reads your original start date and calculates the difference from the current time, so the counter stays correct after a refresh, a closed browser or several days away. Saving is tied to this device and this browser. Use Reset Everything to remove it all.

Can I Download My Relationship Results?

Yes, and each download matches what you used. Calculating your duration offers a Relationship Duration PDF. Using the custom end date, anniversary, monthsary, milestone list or custom milestone each adds its own separate PDF. Features you did not use do not get a button. Every PDF lists the dates, the main result, a breakdown, a short explanation of the calculation and a link back to this tool. The PDF is a personal record based on your entered dates, not an official document.

Can I Share My Relationship Result?

Use Share Result to send a short text through your device share menu, or copy it if sharing is not available. You can also create a result image with your names, duration, total days, next anniversary and next milestone, then share or download it. Names stay in your browser and are only used if you create something yourself.

Is the Relationship Calculator Free?

It is free. There is no account, email form or app to install, and all calculations run in your browser. That also means the page works on phones, tablets and computers, and your relationship details are not sent to a server.

Frequently Asked Questions

How do I calculate how long we have been together?

Enter your start date, add a time if you like, and press Calculate. You get years, months, days and a live counter.

How many days have we been together?

The days section shows your exact total, plus weeks, remaining days, hours, minutes and seconds.

Can I calculate how many months we have been together?

Yes. The months section shows complete calendar months, remaining days, and the same time in years and months.

What date should I use for a relationship calculator?

Use your first date, official date, dating start date, wedding date or any date that matters to you.

Can I calculate our next anniversary?

Yes. Press Show Next Anniversary to see the date, days remaining, years reached and a live countdown.

Can I calculate a 1000-day relationship milestone?

Yes. The milestone table includes 1000 days, and Find My Milestone Date works for any number of days.

Does the relationship counter update automatically?

Yes. The counter updates every second while the page is open.

Does the calculator save my relationship date?

Yes, in your own browser on this device. Reset Everything removes it.

Can I use this relationship calculator without an app?

Yes. It runs in any modern browser with no app, account or email.

Can I download my relationship results as a PDF?

Yes. A separate PDF button appears for each feature you use, and each PDF contains only that feature.

Can I share my relationship result?

Yes. Use Share Result for text, or create a result image to share or download.

Can I use a custom end date?

Yes. Choose any end date on or after your start date to see the length of the relationship at that point.