Tools
The maths around the maths
Percentages, attendance and grade points, worked out the way CBSE works them out. Nothing here leaves your browser.
Percentage & best of five
Enter each subject out of 100. Best of five drops your weakest paper, which is the number most schools print.
Best of five keeps your top five scores. Some schools insist English is one of them — check your report card before you celebrate.
Target marks
You know the percentage you want. This tells you what the papers you haven’t written yet have to score.
Add up everything you’ve already scored
To finish on 90%
Not possible
You’d need 450 in each remaining paper. Pick a target you can actually hit — recalculate with a lower number.
Assumes every paper is out of 100 and weighted the same, which is true for most CBSE boards.
Attendance
CBSE wants 75% to let you sit the boards. This works out where you stand and how much room is left.
Medical leave and school-approved absences are usually excused — this doesn’t know about those. Ask your class teacher before making plans.
Grade points
Where a mark lands on the CBSE nine-point scale.
| Grade | Marks | Points |
|---|---|---|
| A1 | 91–100 | 10 |
| A2 | 81–90 | 9 |
| B1 | 71–80 | 8 |
| B2 | 61–70 | 7 |
| C1 | 51–60 | 6 |
| C2 | 41–50 | 5 |
| D | 33–40 | 4 |
| E | 0–32 | — |
CBSE awards grades on relative position within a subject in some years, so the bands can shift. These are the standard ones.
Question target
Watching explanations feels like studying. Solving is studying. This turns a small daily number into the one it adds up to.
Pick a number you'll still hit on a bad day.
Be honest. Zero is not a plan.
Three minutes a question is a rough blend of a one-mark MCQ and a five-mark long answer — your own pace will differ, and the daily minutes are only there to tell you whether the target is survivable.
Exam countdown
Days are abstract. Study sessions aren’t.
Two hours per weekday is a working assumption, not advice — adjust it in your head for how you actually study.
Unit converter
The SI conversions physics and chemistry papers expect you to already know.
Temperature isn’t here on purpose — it’s an offset, not a factor, and mixing the two is how people get it wrong.