Enter how many classes you have attended and how many have been held. The calculator works out where you stand against the 75% rule most Indian colleges use — and, more usefully, how many classes you can still afford to miss.
How attendance percentage is calculated
Attendance percentage is simply the classes you attended divided by the classes that were held, times 100:
Attendance % = (Classes attended ÷ Classes held) × 100
If you attended 42 of 60 classes, that is 42 ÷ 60 × 100 = 70%. Two points matter here and catch people out every term:
- Classes held, not classes scheduled. A cancelled lecture is not counted against you. Use the number actually conducted, which is what the department register shows.
- Most colleges count subject-wise as well as overall. You can be at 78% overall and still be detained in one subject you skipped. Run the numbers per subject if your college does it that way.
How many classes can you miss and stay at 75%?
The number of classes you can still miss depends on how far ahead you already are, not on a fixed allowance. The maths:
Classes you can miss = (Attended ÷ 0.75) − Classes held
With 50 attended out of 60 held, that is (50 ÷ 0.75) − 60 = 66.6 − 60 = 6 classes. Miss a seventh and you drop under 75%.
The trap is that this shrinks every time a class is held, whether you attend or not. A cushion of six in week four can be gone by week six.
Attendance rules at a glance
| Requirement | Where it usually applies |
|---|---|
| 75% | The standard in most Indian universities and AICTE-approved colleges, including for exam eligibility |
| 80–85% | Medical, nursing and some professional courses; a few autonomous colleges |
| 65–70% | Some universities allow a lower bar with a condonation fee or medical certificate |
Condonation is not automatic. It normally needs a written application, medical proof, and a fee — and most colleges cap how far below the line they will condone. Treat it as a last resort, not a plan.
Frequently asked questions
How do I calculate 75% attendance?
Divide the classes you attended by the classes held and multiply by 100. If the result is 75 or more, you meet the requirement. For example, 45 attended out of 60 held is 75% exactly.
How many classes can I miss with 75% attendance?
Divide your attended classes by 0.75 and subtract the classes held. If you have attended 50 of 60, you can miss 6 more. The allowance shrinks as more classes are held, so recheck it every couple of weeks.
Do cancelled classes count against my attendance?
No. Only classes that were actually conducted are counted. If a lecture is cancelled it does not appear in the register, so it affects neither the numerator nor the denominator.
What happens if my attendance is below 75%?
Most colleges bar you from sitting the end-semester exam for that subject, which usually means repeating it. Many allow condonation on medical grounds with a certificate and a fee, but the rules and the cut-off vary by university — check your own handbook rather than assuming.
Does medical leave count as attendance?
Not as attended classes. It is normally handled through condonation: you apply with a medical certificate and the college relaxes the requirement for that period. Submit it when it happens, not at the end of the term.
Is my data saved anywhere?
No. The calculation runs entirely in your browser and nothing is sent to a server or stored.