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Habit Tracker Online
This habit tracker online helps you build good habits one day at a time. Add a habit, set how many days a week you aim for, and tick off each day you do it. The tracker shows your streak, your completion rate for the week, and a five-week grid so you can see your progress at a glance. Everything is saved in your browser — no sign-up, no account, and your data never leaves your device. Three sample habits are loaded the first time you open it, so you can try it right away.
This week at a glance
The blue circles are the days you ticked off this week. Each day you complete adds to your streak — miss a day and the chain starts over, so never miss twice.
How it works
A habit tracker turns a good intention into a visible record. You pick a habit — reading, walking, drinking water, practising an instrument — and the tracker gives you a grid of days. Each day you do the habit, you tick the box for that day. Over a week the ticks add up into a picture of your consistency, and over a month the picture shows whether the habit is really sticking. The idea is old and simple: what gets measured gets done, and a full row of ticks is its own reward.
To start, type a habit name and a weekly target, then press Add habit. The target is how many days a week you aim to do it: seven suits daily habits like drinking water, five suits weekday habits like reading, and three or four is a kind target for a brand-new habit. The tracker shows the current week plus the past four weeks, so five weeks of history are always visible. Tap any day in the current or past weeks to tick it or untick it — useful when you forget to tick yesterday. Days in the future are greyed out, because you cannot tick a day that has not happened yet.
Two numbers summarise each habit. The completion rate is the share of this week you have ticked: five days out of seven is 71%. The streak is the number of days in a row you have completed the habit, counting back from today. If you ticked Monday to Friday and today is Friday, your streak is 5. If today is not ticked yet, the tracker counts back from yesterday, so an unticked today does not wipe out a streak you are still building — it only ends when a whole day passes unticked. The summary at the bottom of the tool totals all your habits for the week, so you can see your overall week at a glance.
Your data lives in your browser's local storage, on your own device. It is saved the moment you tick a box, and it is still there when you come back tomorrow. Nothing is sent to a server and no account is needed, which means the tracker also works offline. The trade-off is that clearing your browser data, or switching to a different browser or device, starts you over — so use it on the device you reach for every day. Three sample habits are loaded on your first visit: drinking water, reading 20 pages, and walking 30 minutes. Delete them and add your own whenever you like.
The best way to use a tracker is to keep the habit small. "Read 20 pages" beats "read for an hour", and "walk 30 minutes" beats "get fit". Small habits are easy to tick, and easy ticks build long streaks. If you miss a day, do not quit: the rule that works is never miss twice. One missed day is normal life; two in a row is the start of a new pattern. Tick the box the next day and the chain starts again.
Worked example
Take the sample habit "Read 20 pages", with a weekly target of 5 days. Suppose it is Friday evening, and you ticked the habit on Monday, Tuesday, Wednesday, Thursday, and Friday, but not yet on Saturday or Sunday.
Step 1: Count the ticked days this week. Monday to Friday is 5 days.
Step 2: Work out the completion rate. 5 ticked days out of 7 days in the week is 5 ÷ 7 × 100 = 71.4%, which the tracker shows as 71%.
Step 3: Work out the streak. Counting back from today, Friday, the ticked days run Friday, Thursday, Wednesday, Tuesday, Monday — five days in a row with no gap.
Step 4: Compare with the target. The target is 5 days a week, and 5 days are ticked, so the target is met with the weekend to spare.
Try it yourself: the tracker opens with "Read 20 pages" already loaded. Tick Monday to Friday of this week and the tool shows exactly the same numbers — 71% this week, streak 5 days, target met — and the diagram fills five blue circles in a row.
FAQ
How does a habit tracker work?
A habit tracker gives you a grid of days and a habit to tick off each day you do it. You add a habit, such as reading 20 pages, and tap the box for today when you finish. Over days and weeks the grid fills up, and the tracker shows your streak, the number of days in a row you kept the habit, and your completion rate for the week. Seeing the chain grow is the motivation to keep it going.
What is a streak, and why does it matter?
A streak is the number of days in a row you have completed a habit. If you read on Monday, Tuesday, Wednesday, Thursday, and Friday, your streak is 5. Streaks matter because they turn a vague goal into a visible chain, and people work hard not to break the chain. If you miss a day, the streak resets to zero, which is a clear signal to start again the next day rather than give up.
Where is my habit data stored?
Your habits and ticks are stored in your browser's local storage, on your own device. Nothing is sent to a server, no account is needed, and the data stays there when you close the page. It will be lost only if you clear your browser data or switch to a different browser or device, so the tracker is best used on the device you use every day.
What should I set as my weekly target?
Set a target you can actually hit most weeks. Seven days a week suits habits like drinking water, while five days suits habits like reading or exercise, with weekends off. A target of three or four days is fine for a new habit: it is better to hit a small target every week than to aim for seven days, miss twice, and quit. You can raise the target later once the habit feels easy.
What happens if I miss a day?
Nothing bad. The streak resets to zero and the week's completion rate drops, but the habit and all your past ticks stay on the grid. The rule that works best is never miss twice: one missed day is normal life, but two in a row is the start of a new pattern. Tick the box the next day and the streak starts building again.