Find out exactly how many days have passed since any date — in weeks, months and years too.
"How long has it been?" deserves a precise answer. Enter any past date and this calculator tells you exactly how many days have passed since — plus the same span expressed in weeks, months and years.
People use it for anniversaries, job starts, health milestones — and, on this site, for the date they quit a habit. It's the simplest form of progress tracking there is: a date, remembered, and a number that keeps growing.
Yes, but the dedicated quit trackers on this site add milestones, relapse reset and backup — use those for daily habit tracking.
It counts completed days. If you pick yesterday, the answer is 1.