Anniversary Calculator

Enter your anniversary date to see how long you've been together and discover upcoming milestones.

When did you become a couple?

Want it to count?

Save your milestones in the app

This shows today. In the OurCouple app, your days together are counted automatically — you both get reminded before every anniversary, and your whole story stays saved in one private space for two.

Free to play · your answers stay private (end-to-end encrypted)

Frequently Asked Questions

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

Enter the date you became a couple (your first date, the day you became official, or any date meaningful to you) and our calculator instantly shows you the exact number of days, weeks, and months you've been together — plus all your upcoming milestones.

What are the most important relationship milestones?

Popular milestones include 100 days (a tradition in Korean dating culture), 520 days ("I love you" in Chinese culture), 1000 days, and yearly anniversaries. Our calculator tracks 22 milestones from 30 days to 50 years, so you never miss a special date.

What date should I use for my anniversary?

Use whatever date feels meaningful to you! Common choices include: the day you started dating, your first date, the day you met, or when you became "official." The best date is the one you both agree on.

What is the 100 days anniversary?

The 100 days anniversary is a popular milestone in Korean dating culture (called "baegil"). Couples celebrate reaching 100 days together with gifts and special dates. It's become popular worldwide as a way to celebrate early relationship milestones.

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