Relationship Duration Calculator

Pick the date it started. We'll do the math — years, months, days, and a running counter that doesn't stop. No sign-up, no email.

Together for

Still counting

Next milestone

Runs entirely in your browser — your date is never sent to a server, and only saved locally on your own device if you choose.

That's a lot of days. Talk about a few of them.

Draw a card and see what comes up.

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Frequently asked questions

How do I calculate how long we've been together?

Pick the date you count as the start of your relationship, then subtract it from today's date. This tool does that automatically and breaks it down into years, months, and days, plus a running total in days, weeks, and seconds.

What is considered a long-term relationship?

There's no official cutoff, but most people start using the term somewhere between the 6-month and 1-year mark, once the relationship has moved past the early dating phase into something more established. It's more about the stage you're both in than a specific number of days.

Does this save my relationship start date?

Only in your own browser, if you choose — it's stored locally on your device, never sent anywhere, and you can clear it any time by clearing your browser's site data.

What milestones does this track?

100 days, 1 month, 3 months, 6 months, 18 months, 1000 days, and every yearly anniversary through 15 years. It automatically shows whichever one is coming up next.

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