How Long Have We Been Together?
Calculate how long you've been together, your next anniversary, and the day milestones (100, 500, 1000...) of your relationship.
A real calendar calculation
Unlike the rest of the Fun category, this tool isn't based on any tradition or interpretation — it's pure date arithmetic: years, months and days calculated calendar-exact (the same approach as Numelto's age calculator), never a simple division of total days.
How the next anniversary is calculated
It finds the next date with the same day and month as your start date. If you started on February 29 and the anniversary's year isn't a leap year, it automatically adjusts to March 1 of that year.