A free passing marks calculator for any exam. Default is the 35% rule (Tamil Nadu board); change it for your exam. Optional: enter marks you already have (internals) to see how many more you need. Educational tool.
Passing Marks Calculator
- Passing marks = total × pass% ÷ 100, rounded up to a whole mark.
- Tamil Nadu board = 35%; CBSE = 33%; some courses use 40–50%.
- At 35%: 100→35, 75→27, 50→18, 35→13, 30→11, 25→9.
- Already have internal marks? Enter them to see how many more you need.
- Some subjects need a separate pass in theory and practical.
- Always confirm your exam's exact rule — this is a general guide.
How to calculate passing marks
The passing mark is just a percentage of the maximum marks:
Passing marks = total marks × pass % ÷ 100 (rounded up)
For a 35-mark paper at 35%: 35 × 35 ÷ 100 = 12.25, so you need 13 marks (you can't score a fraction, so it rounds up to the next whole mark that clears the threshold). For a 100-mark exam at 35%, it's exactly 35.
If some marks are already secured (internals)
Many exams lock in marks from internals, assignments or practicals before the final paper. Enter those in the "Marks already secured" box and the calculator subtracts them from the passing mark to show how many more you still need. Example: a 100-mark subject at 35% needs 35 to pass; if you already hold 10 from internals, you need 25 more in the exam. One caution — some universities also set a separate minimum in the written paper itself, so clearing the combined total isn't always enough. Check whether your rule is a combined pass or a component-wise pass.
Passing marks at 35% (Tamil Nadu board)
| Total marks | 35% (exact) | Marks to pass |
|---|---|---|
| 25 | 8.75 | 9 |
| 30 | 10.5 | 11 |
| 35 | 12.25 | 13 |
| 40 | 14 | 14 |
| 50 | 17.5 | 18 |
| 60 | 21 | 21 |
| 75 | 26.25 | 27 |
| 100 | 35 | 35 |
35% or 33%? It depends on the board
The pass percentage isn't the same everywhere:
- Tamil Nadu State Board (SSLC/HSC): 35%
- CBSE: generally 33% (so 33/100)
- Many colleges / professional courses: 40% or even 50%
Change the "pass percentage" box in the calculator to match your board or course. And note an important detail: some subjects with theory + practical components require you to pass each part separately, not just the combined total — so a good overall score can still be a fail if you miss the practical minimum.
A note on grace marks and rounding
Two things trip students up. First, rounding: since you can't score a fraction of a mark, the pass figure is rounded up — 8.75 out of 25 becomes 9, because 8 would be below 35%. Second, grace or moderation marks: some boards do award a small number of grace marks to students who narrowly miss the pass line, but the amount and rules change year to year and are never guaranteed. Treat them as a bonus, not a plan — always aim comfortably above the pass mark, not exactly on it.
Common questions this answers
People often search things like "pass mark for 25," "passing marks for a 35-mark paper," "how much is passing for 100," or "how many marks do I need to pass." The table and calculator above cover all of these at 35% — and any other percentage you type in.
Related tools
Need more? Use the percentage calculator, the TN 10th grade calculator, the attendance calculator, or the Arts & Science cutoff calculator.
Frequently asked questions
What's the passing mark for 100?
35 at the 35% rule (33 on CBSE's 33%).
What's the passing mark for 25?
9 (35% of 25 = 8.75, rounded up).
How do I calculate passing marks?
Total × pass% ÷ 100, rounded up. 35-mark paper at 35% = 13.
How many more marks do I need if I already have internals?
Enter your secured marks in the calculator; it subtracts them from the passing mark. Some universities also require a separate minimum in the written paper.
Is it 35% or 33%?
Tamil Nadu board 35%, CBSE 33%; some courses 40–50%.
About ComplyKraft. Built by Dinesh Kumar S in Chennai — B.Sc. Mathematics, M.Sc. IT. Free tools and guides for students.
Disclaimer: Educational tool. Pass percentages, rounding and separate theory/practical minimums vary by board, university and course — confirm your exam's official rule.