A revision countdown for exam morning. Put in the exam date and the subjects you are revising, and it tells you how many days are left, how those days divide between the subjects, and which milestones you should hit on the way there.
It is for the stretch at the end of term where every day looks the same as the last one until there are suddenly only three left. Knowing the number is not the same as having a plan for it, which is why the split and the milestones come together.
The honest detail: an even split is not a plan if one subject is a week of memorisation and another is a proof you keep failing. Take the table as a starting shape and move the days around before you start.
Count down to exam morning with revision milestones. Know exactly how many days you have and what to revise.
How the countdown is worked out
Days left is the exam date minus today, counted in calendar days and rounded up, with today treated as day zero. Exam on 20 October and today on 29 September gives 21 days. An exam dated today gives 0 days, and anything in the past is rejected outright with a message saying the date has already gone.
The subject list is split on commas, so “Biology, Chemistry, Physics” gives three subjects. Days per subject is the total divided by the count, printed to one decimal place. Each row of the table then rounds that share to a whole number of days and labels it a day range, starting from Day 1.
The rounding is worth watching. The summary line rounds once for display, and every row rounds again independently, so the two do not always agree with each other or add up to the total.
Then come the milestones, fixed thresholds rather than dates. Seven days or more and you get “1 week out: Begin past paper practice”. Three days or more adds “3 days out: Focus on weak areas”. One day or more adds a light review with no new material, and the exam morning line is always there however many days you have.
A worked example with real numbers
Today is 29 September, exam on 20 October, subjects Biology, Chemistry and Physics. That is 21 days, and 21 divided by 3 is exactly 7.0 days per subject.
The table reads: Biology, 7 days, Day 1 to Day 7. Chemistry, 7 days, Day 8 to Day 14. Physics, 7 days, Day 15 to Day 21. It lands exactly on the exam, which only happens because 21 divides cleanly by 3.
All four milestones appear, because you have more than seven days: start past papers now, switch to weak areas at three days out, keep the last day light, and turn up early on the morning itself.
Now a messier one. Exam on 9 October from today, same three subjects, which is 10 days. The summary says 3.3 days per subject, and each row rounds independently to 3, so the table assigns Biology Day 1 to 3, Chemistry Day 4 to 6, and Physics Day 7 to 9. Nine days are scheduled and the tenth sits empty, right before the exam.
Go the other way: 11 days with three subjects. The summary says 3.7, each row rounds up to 4, and the table runs Day 1 to 12, a day past the exam. Neither case breaks anything, but you should know which one you are looking at. Leave the subjects blank and you still get the countdown and the milestones with no table, which is the useful version on the morning of a paper you have already revised for.
What the plan assumes
Calendar days, not study days. Weekends, your birthday and the day the washing machine breaks all count the same as a free Saturday. If you know next weekend is gone, cut it out of the total yourself before you believe the schedule.
Every subject gets the same share regardless of how much is left in it. The tool has no idea that Physics needs twice the time Biology does, so equal rows are a starting point you should argue with.
And if you open the page and only see two buttons with no date field, the sums above are the whole method: days between two dates, divided by how many subjects, rounded. It works on paper or in a spreadsheet column, and nothing here is saved anyway, so copy the day ranges out if you want them to survive the afternoon.
Other tools
- Scholarship deadline countdown for the money that closes before the exam does
- Application deadline countdown for forms that need the grade you are revising for
- Assignment due in hours for the smaller deadline sitting between you and the exam
Frequently asked questions
Does the count include the exam day?
No. Today is day zero, so an exam today reads 0 days and the schedule’s Day 1 starts tomorrow. On 21 days, Day 21 is the day before the exam, and the exam morning line is the last thing printed.
How do I enter more than three subjects?
Separate them with commas and include as many as you have. Four subjects over 20 days gives 5.0 days each. Five subjects over 11 days gives rows of 2 days, which leaves a day unassigned because 11 does not divide by 5.
What if the exam date has already passed?
It stops and says so. The countdown never runs backwards or shows a negative number, so a mistake in the date gets caught rather than quietly counted as a free day.
What should I do on the last day?
The plan says light review and no new material, and that is the one milestone worth following exactly. The last day is for the sheet you already made, not for the chapter you have never opened.