Free Online Habit Streak Calendar
Track daily habits, completions, and current streaks.
Habits
0Check-ins are stored in this browser's local storage only. There is no account and no server. Clearing site data or using private mode will remove or hide the history.
Click a day to add or remove a check-in. Future days are disabled. A streak continues through yesterday if today has not been checked yet, so an unfinished today does not erase your progress.
About the Habit Streak Calendar
Habit tracking works best when the record is quick to update and easy to see. This calendar lets you add a few habits, pick one, and click the days you completed it. The monthly view shows every check-in at a glance, while the summary calculates a current streak, the longest streak, and the completion rate for the displayed month. Everything is stored in your browser's local storage, so there is no account, no server, and no network request after the page loads.
A streak is a run of consecutive checked days. The current streak counts backwards from today; if today has not been checked yet, it counts backwards from yesterday, which avoids punishing you before the day is over. The longest streak scans the entire saved history and finds the best run. The completion rate divides the number of checked days in the displayed month by the number of days in that month. Use the arrows to review past months and see how consistency changed over time.
Keeping the habit loop simple
- Start small: a habit you can complete on a bad day is more useful than an ambitious one you abandon.
- Check in at the same time: attach the click to an existing routine, such as morning coffee or bedtime.
- Do not chase perfection: a missed day breaks the streak but not the habit. The monthly rate shows the bigger picture.
- Keep the list short: two or three active habits are easier to maintain than ten half-finished ones.
Privacy, storage, and limits
The habit names and check-ins are saved as a small JSON object under a key used by this page. They never leave your device through this tool. That also means they are tied to this browser profile: switching devices, clearing site data, or using private browsing will lose or hide the history. There is no sync and no export in this version, so avoid relying on it as your only long-term record.
The calendar uses your device's local date. If you travel across time zones, a check-in made near midnight may be recorded under the local day at the time of the click. The streak calculation uses calendar-day keys, not elapsed hours, which is the usual convention for daily habits. The tool does not send reminders, track quantities, or analyse triggers. It is a simple visual record and an informational aid, not medical or behavioural advice.
Frequently asked questions
Where are my check-ins stored?
In your browser's local storage under a key used by this page. Nothing is uploaded. Clearing site data, using private mode, or changing devices will remove or hide the saved history.
What happens to my streak if I miss a day?
The current streak resets to zero on the next day without a check-in. The longest streak remains as a record of your best run, and the monthly completion rate shows the wider pattern.
Can I track more than one habit?
Yes. Add as many as you need, then select one at a time to view and edit its calendar. The summary always refers to the selected habit and the displayed month.