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PRODUCTIVITY

Habit Streak Calculator

Paste completed habit dates to measure current streak, longest streak, tracked days, and completion rate locally.

Tool statusRuns in your browser
Preview

Habit log

Results

Completed days
4
Current streak
2
Longest streak
2
Completion rate
80%

Tracked days: 5. Current streak counts today, or yesterday if today is not logged yet.

How it works

  1. Enter your input

    Fill in the values, paste your text, or upload the file this tool works with.

  2. See results instantly

    Most tools update live as you type; a few use a single button. Either way, the result appears right on this page.

  3. Use your results

    Copy, download, or share what the tool produces — you're always in control of the output.

Privacy and processing — Runs locally in your browser. This tool does not upload your input.

What is Habit Streak Calculator?

A habit streak calculator reads a list of completed dates and works out the current consecutive-day streak, the longest streak on record, and the overall completion rate since tracking began.

UNDERSTAND THE TOOL

How to calculate habit streaks

Use this calculator to check a current streak, longest streak, and completion rate from a simple list of dates you completed a habit — no app, account, or tracking service required.

How streaks are counted

The current streak counts backward from today (or yesterday, if today isn't logged yet) for as long as each preceding day is present. The longest streak scans the whole date list for the longest run of consecutive days anywhere in it.

  • Completion rate is completed days divided by tracked days — the span from the first to the last logged date, not the number of days since you started using the tool.

Keeping a log that's actually useful

  • Log the date as soon as you complete the habit — reconstructing a week from memory tends to be optimistic.
  • Pick one consistent reference point (like "before bed") for what counts as a completed day.
  • A missed day is data, not a failure — the longest-streak number stays on record either way.

Reading the completion rate

Completion rate is measured against the full tracked span, so a great current streak after a rocky start can still show a modest overall rate — both numbers are telling you something different.

A streak is feedback, not a verdict

Missed days lower the current streak, but they're still useful information for adjusting a routine — treat the number as a nudge, not a reason to abandon the habit entirely.

Frequently Asked Questions

Why can yesterday count toward the current streak?

If today isn't logged yet, the tool checks whether the habit was completed yesterday, so an in-progress day doesn't reset the streak to zero.

What date format should I use?

YYYY-MM-DD (like 2026-01-15) parses reliably regardless of your browser's locale.

How should I separate multiple dates?

New lines, spaces, commas, and semicolons all work, so you can paste dates from almost any source.

Does it sync with a habit-tracking app?

No — it only analyzes whatever dates you paste into the page, and nothing is saved after you leave.

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